I was assembling a John Deere 219 out of a 450C bulldozer today & customer kept asking me how the bearings got oil. I just handed him the phone with your video running. Thanks for keeping him off my back for 25 minutes lol. Evidently you explained it well cause he didn't ask me any more questions.
After watching your videos I’ve decided to go after a career in heavy equipment mechanic I’ve got a few more years till it’s possible but I’m learning as much as I can think you keep up the great work
If you watch as many TH-cam videos as you possibly can and read as much as you can for as long as you can... And also get your hands on as much as you can before u start your career you will be LIGHT-YEARS ahead of everyone else by the time you start!!! That's what I did and I was swapping engines within a few months in the field while other guys had years experience and they were just doing brakes and suspension
Do it bro I’m 24 8 months ago I was looking at videos thinking of becoming a diesel mechanic I had doubts because I thought I spent to long working other jobs I wouldn’t get the hang of it but I said fuck it now I’m about to graduate my diesel program in April and I love it !!🔥🔥
Another great video! I am a diesel motorhome owner with a Cat C7 and this series of videos has been invaluable for me to keep abreast of how a diesel engine works and what to look for in case of failure but most importantly how to keep on top of ALL of the maintainence that a Diesel requires. Thanks Josh for keeping us rolling down the road!
Every truck dealer needs a guy like this. Someone that actually understands the systems rather than just being a parts changer after someone else told you what parts to replace. Hopefully you’re getting paid enough for The knowledge you have.
Love this series. Have watched the others multiple times. Best quality on the net. PLEASE keep them coming my friend- especially these longer ones! Much appreciated.
Hey, just wanna say your videos are really great, from someone that didn’t know even how a diesel engine worked, after the first 3, i have a total understanding of what you’re saying. Great job
We are very lucky having a guy like you spending so much time to explain everything so perfectly! But sometime I think the medical field has missed to add a very good canditate in their clan.
Greetings for Australia,Great videos with clear explanations.I have recently purchased a 17 year old sailing Catamaran with 2 diesel motors so need to up grade my zero knowledge of their maintenance and troubleshooting any problems that may arise while out to sea. Your videos are much appreciated.Cheers Rod
Oil changes are crazy simple. Its ridiculous how many people dont change their oil, its so simple and unfortunately most people dont get how important constant lubrication is for an engine. Great explanations man, keep it up!
You are correct about not being able to use a centrifugal purifier to clean the oil. The reason is due to the oil dilution by fuel and other hydrocarbons that build up from partial combustion of the oil on the cylinder walls. Technically the oil doesn't get broken down except by oxidation. The oil itself never wears out, it just gets contaminated. This is why Amsoil can claim that with their ultrafiltration bypass oil filter system, you can get 100,000 miles before you need to change the oil. Because it supposedly cleans the oil so well, that it keeps the contaminants low enough. This is also why manual transmissions can last so long and not need the oil changed out nearly as often as engines.
Bro can you do more of these? If its no value in the effort you put in i would be happy to support you if you set up patreon. I learn way more than in class where I pay 20k for! Your explenations are so good and english is not my main language and I can understand everything. Keep up the good work. I am pumped to learn more from you! Thanks from a german in Australia! :)
Thanks man just bought a 99 GMC 3500 6.5l. box truck with only 140k miles. those engines have so many dumb parts that need to be fixed. But I think I can keep it running well for a good while. Haven't had a vehicle without a loan before, so looking forward to finally get hands on and learn for myself. I've learned so much watching this class. And i just keep having things click between posts and videos I've seen and the information you're talking about. So thank you for real man
Wow you really do an amazing job explaining all this clearly. I’ve learned so much already from your videos. I hope they continue! Thank you for putting these together.
your awesome, knowledgeable, factual, reliable. I've always liked your videos but this video on oil which others have often fall short, you Sir have convinced me to consider you as a Subject Matter Expert. Thank You.
Hey thank you. I'm not an expert, there are lots of people that understand everything I discuss more than me, I think I'm just good at explaining things or just not too self conscious to post a video about it.
Part 1 was useful, we learned the name of the parts and the exact nature of what they do. This part though, be like "it is important that the oil is clean, also it gets hot".
Love these videos, my friends think I know so much about my big truck engines, haha. I just repeat Adept Ape. I did though learn to change my air compressor governor for $25.00 instead if $310.00 thanks to TH-cam university!
I've been a diesel engine mechanic for 42 years and have seen some failures from oil filter mishandling and using cheaper oil filters. I've seen welding slag in piston cooling nozzles, a piece of a twig, small rocks and pieces of o-ring. These items cause piston to liner scoring. All of these items were bigger than the opening size of the oil suction screen, so there was only one way for them to get into the oil system. They all entered, during oil filter changes. Some could have been deliberately placed in the filters or by mishandling the filter before installation. The slag could have gotten in from someone doing some welding near a unit having service work done and the filters standing up uncovered, waiting to be installed and the slag fill into the center hole of the filter. The small rocks and the twig, both from different jobs could have fallen in because of, oil filter head area not being cleaned properly, before filter change. The o-ring cause a turbo failure because it blocked the passage to the turbo. This o-ring was from the oil filter itself, Komstsu filters had an o-ring seal that would get cut during filter installation and would fall into the filtered side of the filter and get pushed into the oil system and travel along until it reached a passage that was too small for it to pass through and would block that passage and starve, what ever component it supplied oil to. They redesign the filters and did away with the o-ring and this corrected that problem. Unfortunately most of the people doing oil and filter changes don't even know how a filter works and how to properly handle filters during this service work, most of them couldn't tell you how the oil flows through a filter. Any time I disassemble an engine and find a failure, I'm always looking for unusual signs or cause of the failure. I'm always on the lookout for these unusual findings. I always pull the piston cooling nozzles and use brake cleaner to flush them out on a clean surface to see if anything has found it's way into a spray tube. The twig had blocked a piston cooling nozzle and scored the piston and liner in a KTA19 Cummins engine. On a different subject make sure that you have a good ground between the engine block and chassis at all times. We had an engine come in with low oil pressure, while removing the engine from the unit I noticed the ground strap to the engine was loose and showed signs of arcing. When I removed the main bearings and measured them, they were thinner than specification. Found black streaks on the crank journals, suspected build up from arcing through the oil film that deposited carbon on the crank and caused the aluminum surface of the bearings to be worn away. Also found damage to the drive damper ball bearing. All of this damage was because of the loose ground strap and electricity look for a ground path during engine starting.
Thank you so much - I took a couple of basic classes in college and learned very little - these videos have been tremendously informative and beneficial
What do you call SUBSTANTIAL, PRODIGY, INTELLECTUAL add one more KNOWLEDGEABLE the answer is ADEPT APE Thank you so much for sharing what you know with us. God bless you and all your family around you. Take care and have a great day ADEPT APE From Nick Ayivor from London England UK 🇬🇧
Here you got a few things wrong (certain fluids are compressible- why hyd fluid & oil is used instead of water), and heat can be destroyed.. you're thinking of matter Otherwise, I'm enjoying each of your videos- in order (much is refresher on engines in general..in case I become diesel tech) Keep up the info and enthusiasm!! -And GOOD JOB on the disclaimer to keep hands out of boiling water!!!!!!!!!!!!!!
I like the videos, and am learning, but some of what is being said is not strictly accurate. (and maybe it doesn't matter) A pump generates pressure; the pressure it can generate often depends on the flow rate. It can generate higher pressures at lower flows. A restriction increases the impedance of coolant circuit, which changes the balance between flow and pressure, but the pump certain generates pressure, which causes flow, a pump does not magically create flow: that would be impossible without pressure. The key thing about liquids as coolants versus air is that they have a high thermal capacity, the volume needed to move a certain amount of heat is much lower. If you used gas at the same density as liquid it would cool just as well (for example very high pressure Helium). After all the heat will end up in air eventually... There are air cooled engines...
Hey great video! One thing: fluid and liquid is not the same thing. A fluid refers to a liquid AND a gas. So technically some fluids are compressible however liquids are not compressible.
Yep oil change suck but there a must and you can't throw additives at your oil if you're over mileage sure it maybe 300+ to do a oil change that still better than 8000 on a in frame and possibly destroying internal parts thanks for the video
3:35 One thing I'd like to clarify for the pedantic (like me) - Fluid (n) A continuous, amorphous substance whose molecules move freely past one another and that has the tendency to assume the shape of its container; a liquid or gas. _Liquids_ are not compressible, but some _fluids_ are (such as gases.) Always be careful when substituting terms, as the two words don't quite share the same meaning. That said, still a great video (as always.) Cheers, Josh! :-)
Another awesome video. I love watching, listening and learning from these videos! Could you make a video on how engine brakes work? I have a good understanding of how they work, I just don't know all of the fine details about them. Also; I have a Cat C-12 and I'm running Delo XSP 5W-40 synthetic oil in it. Been changing it around 15-17,000 miles. Is this an acceptable interval for this Cat motor? Can't seem to find a concrete answer. Thanks again!
Great videos!! It’s funny you say oil is not compressible. I’m sure it is fairly accurate in the small volume you’re talking. When we test plugs, BOPs etc in the oil field there is a definite difference between the compressibility of oil vs water. I thought oil was approx 30% more compressible than water or thereabouts. Totally different scenario just thought it was funny when you said it.
Adept Ape I’ll give an example. We are doing a P&A (Plug and Abandonment) on a well and we’re testing a cement plug at 10000’. A lot depends on the test pressure but a fairly typical one would be 5000 psi. Completion size of 6.8” ID so the volume static approx 450bbls or 71.4 m3.
@@jamieleblanc5408 clearly not what his point is, the man does a nice job with dealing with real-world stuff, not that what you're talking about isn't real world but it doesn't pertain to his subject matter, perhaps you should go back to the commode you were just sitting on and dissect that thing in the bowl I'm sure you'll have a good argument with the corn, Josh you do nice job I've always been entertained and informed by what you have to say. I have a question that you will actually enjoy, why is it that a C15 acert has injector calibration codes on the injectors but when you try to enter them there is no field for it?
Eddie ball like I said the guys videos are great, I’m certainly not a mechanic and I’ve learned a lot from them. Rather than have a snide comment back let’s just end this here, I’m not into internet bickering. Have a nice day.
Dear josh I have c12 cat in Pete and what I have notice that oil temperature doesn’t get hot should I be concerned. Please advise by the way it’s 1998 only has 600000 km and I try to look after this engine fairly good to best of my knowledge love your show. Many thanks
Thank you for clearing up that a oil pump just pumps oil throughout the engine the bearing clearance determines the oil pressure and secondly please tell people there's no such thing as a dry start because rather an engine sits for 5 minutes or 40 years there's always a film of oil on the bearings when you remove the bearing cap
Are there any books that you would suggest to go alongside with learning the diesel engine? I tried the basic Google search but I'm swamped with all the different options. I'm interested in regard to diesel engines in 18wheeler repair. All responses are welcome.
Off topic tho, for cars and trucks how does the oil have a cool down process. Never knew that, I get the coolant, cools and the systems are seperated but is the system managing on their own or does the typical/common fuel engine have a similar cooling process as say your diesel engines. And secondly thanks for the videos hope you do more!
I'm not 100% sure about cars and trucks, but on some motorcycles, there is an oil cooler that exchanges the heat with external air (Oil to air) rather than the two-step process Josh is describing where the oil exchanges heat with the (liquid) cooling system that then exchanges heat with external air.
Not trying to be rude, but two things I wanted to clarify: Liquids actually ARE compressible. It's just that liquids have _extremely low_ compressibility factors that it's almost negligible. For example, increasing the pressure on a quantity of water by one atmosphere will decrease the pressure by 46.4 parts per million. So let's say you are given 1 gallon of water, and you want to compress it into 1 quart of water. One gallon is four quarts. You would have to increase the pressure by log(0.25) / log(1 - 46.4 / 1000000) = 29876.3 atm = *approximately 29900 times atmospheric pressure.* But this is why hydraulics work the way they do, because it takes so much pressure to compress liquids to any extent where errors would be significant that it's basically negligible. Also, 212°F is _not_ less than half as hot as 450°F. The reason is because Fahrenheit is a _relative_ scale, not an _absolute_ scale. You have probably heard about the Kelvin scale, which is an absolute scale that is often used in chemistry and mechanical engineering, for example. There is also the much less known Rankine scale (°R), which is the absolute equivalent of Fahrenheit. 0°K = 0°R = -273.15°C = -459.67°F. 0°F = 459.67°R, 0°C = 273.15°K. When you calculate percent changes between temperatures in Fahrenheit, you need to add 459.67° before dividing the temperatures. For Celsius you need to add 273.15°. When you do this, you'll find that 450°F is actually *35.4%* hotter than 212°F.
Nerd Alert! Actually those are pretty interesting calculations there. I did not know the heat scale was not linear, I did know about latent heat in fluids and how boiling is affected, but you obviously have a much deeper understanding of physics than I do. I didn't find your comment rude at all as you didn't insult me, you just pointed out some very technical errors.
Do you think i could pass the mechanic diesel civil service test with this knowledge All i am saying is thank you for these videos, hopefully i can pass
Love you videos. Have a 3126 in my motorhome. In the process of doing a new head gasket and head I was told I have a scored cylinder, number 2. What could have caused this and if I ok doing the gasket and head anyway and drive it. What could be the consequences? Don’t want to do an engine rebuild or new reman motor. Any comment would really be appreciated. When you have time. Thank you
Buddy I have always used since I overhauled my engine mobil 15w-40 and 1 gallon of Lucas and I checked at 600000 miles mains and they look like new no burns we all have different opinions
@@Gstarxpress well I have used Rotella back then on my big cam 4 and on my 425 cat the thing is in the new Rotella thay made 15w-40 it looks like water when u drain it thats why I use mobil now and 1 gallon of Lucas haven't had any problems with damaging engine when its cold i don't use it at all on the lucas
I have seen a video of this guy in Florida he is a mechanic also and he uses gear oil well i might not go that way soon lol I'm good what I have been putting
Unfortunately the shop I work at wants us to prefill filters. Our trucks are severe duty...running in and out of limestone pits. They do get washed but not always before an oil change. To me it is a lot easier to guide a filter through to its spin on with out oil in the filter. Dirty air lines or electric cables are easy to hit when you have a filter that is full, as compared to one that has no oil in it. I can’t convince anyone that we increase contamination by prefilling filters.
I had a early 3406 that had the cooling jet in the cylinder block. Had a piston failure, so I dropped the main bearing and removed the top bearing. I pushed out a tin foil top from a oil jug. Someone prefilled the oil filter and poured the oil in the center hole which is the outlet. I guess they pushed in on the tin foil and it fell into the oil jug. Thus when they filled the oil filter it went into the outlet section. On start up right into the oil gallery and eventually into that cooling jet. I took another tin foil and tried to see if it could slide under the suction bell screen, it would not. If you prefill ANY filter, you need a plug to block off the outlet. Thus you force the fluid to the dirty side first. I sometimes prefill fuel filters and I use a SOS line. I get a new one each time so it is clean. I can put the line into the dirty side and filter the fuel.
I'm learning so much. I have a CAT C7 that consumes oil like a college kid consumes tequila. My blowby is a regular hotbox. It's all a self changing oil system. But these videos are really fun to learn from, I know jack shit about diesels. I also like Roger The Mechanic, these two youtubers are bookends of knowledge.
The boiling hot water would scald your hand since your hand is cooler than the water, your hand would act as a heat sink and draw the heat into your hand. The hot oil also draws the heat away from the bottom of the hot cylinders. Laws of thermodynamics. One of the best things to clean your dirty greasy hands is to use a bit of clean oil. It works amazing in a pinch.
What in your opinion would cause a temporarily loss of oil pressure on a Diesel engine. Specifically a Cummins 450. Would a faulty or clogged oil filter?
I was assembling a John Deere 219 out of a 450C bulldozer today & customer kept asking me how the bearings got oil. I just handed him the phone with your video running.
Thanks for keeping him off my back for 25 minutes lol. Evidently you explained it well cause he didn't ask me any more questions.
After watching your videos I’ve decided to go after a career in heavy equipment mechanic I’ve got a few more years till it’s possible but I’m learning as much as I can think you keep up the great work
If you watch as many TH-cam videos as you possibly can and read as much as you can for as long as you can... And also get your hands on as much as you can before u start your career you will be LIGHT-YEARS ahead of everyone else by the time you start!!! That's what I did and I was swapping engines within a few months in the field while other guys had years experience and they were just doing brakes and suspension
@@maxadkins3870 100% truth
💯
@@maxadkins3870 at what age did you start? I recently just started doin personal research myself currently looking for classes
Do it bro I’m 24 8 months ago I was looking at videos thinking of becoming a diesel mechanic I had doubts because I thought I spent to long working other jobs I wouldn’t get the hang of it but I said fuck it now I’m about to graduate my diesel program in April and I love it !!🔥🔥
I’ll tell you that watching your videos is really making me “Get Smart”
Another great video! I am a diesel motorhome owner with a Cat C7 and this series of videos has been invaluable for me to keep abreast of how a diesel engine works and what to look for in case of failure but most importantly how to keep on top of ALL of the maintainence that a Diesel requires. Thanks Josh for keeping us rolling down the road!
Every truck dealer needs a guy like this. Someone that actually understands the systems rather than just being a parts changer after someone else told you what parts to replace. Hopefully you’re getting paid enough for The knowledge you have.
Love this series. Have watched the others multiple times. Best quality on the net. PLEASE keep them coming my friend- especially these longer ones! Much appreciated.
Ugh I’m binge watching right now thank you so much for this I appreciate your videos
Glad you like them.
Hey, just wanna say your videos are really great, from someone that didn’t know even how a diesel engine worked, after the first 3, i have a total understanding of what you’re saying. Great job
We are very lucky having a guy like you spending so much time to explain everything so perfectly! But sometime I think the medical field has missed to add a very good canditate in their clan.
Very fine vid buddy! And Amen! Keep that oil clean and full!!
Thank you Shane.
Oil also pulls heat from the engine and thereby becomes a heat sink! Coolant does too!
Great job of explaining, enjoying all your videos! Thanks!
Totally awesome. Too many people don't explain the fact that diesel fuel gets into the oil and dilutes it. Excellent job Josh, thank you.
Greetings for Australia,Great videos with clear explanations.I have recently purchased a 17 year old sailing Catamaran with 2 diesel motors so need to up grade my zero knowledge of their maintenance and troubleshooting any problems that may arise while out to sea.
Your videos are much appreciated.Cheers Rod
Oil changes are crazy simple. Its ridiculous how many people dont change their oil, its so simple and unfortunately most people dont get how important constant lubrication is for an engine. Great explanations man, keep it up!
You are correct about not being able to use a centrifugal purifier to clean the oil. The reason is due to the oil dilution by fuel and other hydrocarbons that build up from partial combustion of the oil on the cylinder walls. Technically the oil doesn't get broken down except by oxidation. The oil itself never wears out, it just gets contaminated. This is why Amsoil can claim that with their ultrafiltration bypass oil filter system, you can get 100,000 miles before you need to change the oil. Because it supposedly cleans the oil so well, that it keeps the contaminants low enough. This is also why manual transmissions can last so long and not need the oil changed out nearly as often as engines.
Bro can you do more of these? If its no value in the effort you put in i would be happy to support you if you set up patreon. I learn way more than in class where I pay 20k for!
Your explenations are so good and english is not my main language and I can understand everything.
Keep up the good work.
I am pumped to learn more from you!
Thanks from a german in Australia! :)
I just posted a video on Diesel Fuel Systems a few days ago, you should check it out. Thanks for watching.
Thanks man just bought a 99 GMC 3500 6.5l. box truck with only 140k miles. those engines have so many dumb parts that need to be fixed. But I think I can keep it running well for a good while. Haven't had a vehicle without a loan before, so looking forward to finally get hands on and learn for myself. I've learned so much watching this class. And i just keep having things click between posts and videos I've seen and the information you're talking about. So thank you for real man
Wow you really do an amazing job explaining all this clearly. I’ve learned so much already from your videos. I hope they continue! Thank you for putting these together.
Great videos. Only comment I have is that Fluids are liquids AND gasses: anything that flows.
One of your best vids. A shout out to those English majors watching.,📝
My 88 twin cam Harley engine actually has piston oilers. Awesome integration for air cooled gasoline engines.
Well Done...You are a natural teacher... with the necessary knowledge and experience..
I cant wait for the next video in this series. You have a great way of explaining things.
Thanks for making these videos even the most mechanically unaware people can follow.
Thank you. This is the best learning channel on TH-cam 👌🏾👌🏾
your awesome, knowledgeable, factual, reliable. I've always liked your videos but this video on oil which others have often fall short, you Sir have convinced me to consider you as a Subject Matter Expert. Thank You.
Hey thank you. I'm not an expert, there are lots of people that understand everything I discuss more than me, I think I'm just good at explaining things or just not too self conscious to post a video about it.
Adept Ape I have a C7 in a school bus, with a worn cooling fan, can I service the silicon oil clutch or am I required to buy a new cooling fan ???
Good job 👍. Very well done. Makes it very interesting and easy to understand.
Part 1 was useful, we learned the name of the parts and the exact nature of what they do.
This part though, be like "it is important that the oil is clean, also it gets hot".
Love these videos, my friends think I know so much about my big truck engines, haha. I just repeat Adept Ape. I did though learn to change my air compressor governor for $25.00 instead if $310.00 thanks to TH-cam university!
I've been a diesel engine mechanic for 42 years and have seen some failures from oil filter mishandling and using cheaper oil filters. I've seen welding slag in piston cooling nozzles, a piece of a twig, small rocks and pieces of o-ring. These items cause piston to liner scoring. All of these items were bigger than the opening size of the oil suction screen, so there was only one way for them to get into the oil system. They all entered, during oil filter changes. Some could have been deliberately placed in the filters or by mishandling the filter before installation. The slag could have gotten in from someone doing some welding near a unit having service work done and the filters standing up uncovered, waiting to be installed and the slag fill into the center hole of the filter. The small rocks and the twig, both from different jobs could have fallen in because of, oil filter head area not being cleaned properly, before filter change. The o-ring cause a turbo failure because it blocked the passage to the turbo. This o-ring was from the oil filter itself, Komstsu filters had an o-ring seal that would get cut during filter installation and would fall into the filtered side of the filter and get pushed into the oil system and travel along until it reached a passage that was too small for it to pass through and would block that passage and starve, what ever component it supplied oil to. They redesign the filters and did away with the o-ring and this corrected that problem. Unfortunately most of the people doing oil and filter changes don't even know how a filter works and how to properly handle filters during this service work, most of them couldn't tell you how the oil flows through a filter. Any time I disassemble an engine and find a failure, I'm always looking for unusual signs or cause of the failure. I'm always on the lookout for these unusual findings. I always pull the piston cooling nozzles and use brake cleaner to flush them out on a clean surface to see if anything has found it's way into a spray tube. The twig had blocked a piston cooling nozzle and scored the piston and liner in a KTA19 Cummins engine. On a different subject make sure that you have a good ground between the engine block and chassis at all times. We had an engine come in with low oil pressure, while removing the engine from the unit I noticed the ground strap to the engine was loose and showed signs of arcing. When I removed the main bearings and measured them, they were thinner than specification. Found black streaks on the crank journals, suspected build up from arcing through the oil film that deposited carbon on the crank and caused the aluminum surface of the bearings to be worn away. Also found damage to the drive damper ball bearing. All of this damage was because of the loose ground strap and electricity look for a ground path during engine starting.
The best explanation I've heard so far
I am always looking forward to your new releases. Thanks
Thank you so much - I took a couple of basic classes in college and learned very little - these videos have been tremendously informative and beneficial
What do you call SUBSTANTIAL, PRODIGY, INTELLECTUAL add one more KNOWLEDGEABLE the answer is
ADEPT APE
Thank you so much for sharing what you know with us. God bless you and all your family around you. Take care and have a great day
ADEPT APE
From Nick Ayivor from London England UK 🇬🇧
Informative! Gasses and liquids are both fluids so it’s just that liquids are not compressible, but gasses are!
Wow... It seemed like a year without a video to me, thank you for everything man!
I love the way y explain that system sir!! Appreciate it all!! Every owner has that fear of catastrophic monument!!! Like myself...🙏🙏
Any idea when you can post part 5?
Love the videos
Another great video! Keep ‘em coming. Loving this Diesel 101 series
Omg, love these! Could use the occasional quiz because I feel like I’ve already forgotten some. (Like, what are the 4 strokes again?)
Great job at explaining lubrication. Once more thank you. You are providing a great education with your videos.
All i need to learn in mechanical are here in your series. Thank you so much!
Thank you for putting on this course. Great information,explained very well. Awesome!
The other main contaminate is water. A lot of water is produced when fuel is burnt. Condensation is also present when a cold engine is started.
Here you got a few things wrong (certain fluids are compressible- why hyd fluid & oil is used instead of water), and heat can be destroyed.. you're thinking of matter
Otherwise, I'm enjoying each of your videos- in order (much is refresher on engines in general..in case I become diesel tech)
Keep up the info and enthusiasm!!
-And GOOD JOB on the disclaimer to keep hands out of boiling water!!!!!!!!!!!!!!
I like the videos, and am learning, but some of what is being said is not strictly accurate. (and maybe it doesn't matter)
A pump generates pressure; the pressure it can generate often depends on the flow rate. It can generate higher pressures at lower flows. A restriction increases the impedance of coolant circuit, which changes the balance between flow and pressure, but the pump certain generates pressure, which causes flow, a pump does not magically create flow: that would be impossible without pressure.
The key thing about liquids as coolants versus air is that they have a high thermal capacity, the volume needed to move a certain amount of heat is much lower. If you used gas at the same density as liquid it would cool just as well (for example very high pressure Helium). After all the heat will end up in air eventually... There are air cooled engines...
You look loaded with energy and that promises next installment sooner....
You make things so easy to understand, Thanks Buddy
Hey great video! One thing: fluid and liquid is not the same thing. A fluid refers to a liquid AND a gas. So technically some fluids are compressible however liquids are not compressible.
Great information and video. Thank you for your time and content.
This guy would be an excellent teacher at a diesel tech school.
Love the videos mate, keep them coming!!
Are you able to make some problem solving vids aswell down the track 🤙🏼
Thank you for your time brother. Much love learning a lot from you.
Yep oil change suck but there a must and you can't throw additives at your oil if you're over mileage sure it maybe 300+ to do a oil change that still better than 8000 on a in frame and possibly destroying internal parts thanks for the video
Love the videos...Almost home to watch it though...
Learning all the time thanks for sharing your knowledge Josh 👍🇦🇺👀
Thank you Kerry.
The Professor has done it again 👍
Just bought a 50' Azimut boat with Penta Diesels. I'm just trying to figure how things work so I understand what the mechanics are talking about...
I enjoy your videos very informative thank you. Were is your shop?
Excellent video well explained and I totally agree with everything you said
Keep making videos love them 👍🏼
Thank you for the great courses!
Water is an excellent heat sink! Some metals are as well! Air is one as well, just not as efficient!
You are the best 💪🏻 i hope to make videos for generators caterpillar like 3516 and 3606 and other generators
Thanks again, clear and entertaining!
3:35 One thing I'd like to clarify for the pedantic (like me) -
Fluid (n)
A continuous, amorphous substance whose molecules move freely past one another and that has the tendency to assume the shape of its container; a liquid or gas.
_Liquids_ are not compressible, but some _fluids_ are (such as gases.) Always be careful when substituting terms, as the two words don't quite share the same meaning.
That said, still a great video (as always.) Cheers, Josh! :-)
Excellent, nicely done!
Great and informative video..
I learned a little but I'm mainly here for the free beer... And to hear the 1812 Over-mature. >Oil galley smh
Another awesome video. I love watching, listening and learning from these videos! Could you make a video on how engine brakes work? I have a good understanding of how they work, I just don't know all of the fine details about them.
Also; I have a Cat C-12 and I'm running Delo XSP 5W-40 synthetic oil in it. Been changing it around 15-17,000 miles. Is this an acceptable interval for this Cat motor? Can't seem to find a concrete answer.
Thanks again!
What does your OMM say?
I love these videos man keep them up!!
First comment 👍
Great videos!! It’s funny you say oil is not compressible. I’m sure it is fairly accurate in the small volume you’re talking.
When we test plugs, BOPs etc in the oil field there is a definite difference between the compressibility of oil vs water. I thought oil was approx 30% more compressible than water or thereabouts. Totally different scenario just thought it was funny when you said it.
What volumes and pressures are you dealing with?
Adept Ape I’ll give an example. We are doing a P&A (Plug and Abandonment) on a well and we’re testing a cement plug at 10000’. A lot depends on the test pressure but a fairly typical one would be 5000 psi. Completion size of 6.8” ID so the volume static approx 450bbls or 71.4 m3.
@@jamieleblanc5408 clearly not what his point is, the man does a nice job with dealing with real-world stuff, not that what you're talking about isn't real world but it doesn't pertain to his subject matter, perhaps you should go back to the commode you were just sitting on and dissect that thing in the bowl I'm sure you'll have a good argument with the corn, Josh you do nice job I've always been entertained and informed by what you have to say. I have a question that you will actually enjoy, why is it that a C15 acert has injector calibration codes on the injectors but when you try to enter them there is no field for it?
Eddie ball like I said the guys videos are great, I’m certainly not a mechanic and I’ve learned a lot from them. Rather than have a snide comment back let’s just end this here, I’m not into internet bickering. Have a nice day.
Dear josh I have c12 cat in Pete and what I have notice that oil temperature doesn’t get hot should I be concerned. Please advise by the way it’s 1998 only has 600000 km and I try to look after this engine fairly good to best of my knowledge love your show. Many thanks
Thank you for clearing up that a oil pump just pumps oil throughout the engine the bearing clearance determines the oil pressure and secondly please tell people there's no such thing as a dry start because rather an engine sits for 5 minutes or 40 years there's always a film of oil on the bearings when you remove the bearing cap
It would be easier to find the other videos in this series if you link to the other videos in the description of each video in the series.
Are there any books that you would suggest to go alongside with learning the diesel engine? I tried the basic Google search but I'm swamped with all the different options. I'm interested in regard to diesel engines in 18wheeler repair. All responses are welcome.
You're awesome. Well done, Sir.
What are your thoughts on an oil bypass Filter
Hey keep these 101 videos going please
That will depend on how many views this gets, the last one did poorly unfortunately.
Awesome videos on diesel engines!
Thanks for being a regular guy, Mark Wahlberg!
Off topic tho, for cars and trucks how does the oil have a cool down process. Never knew that, I get the coolant, cools and the systems are seperated but is the system managing on their own or does the typical/common fuel engine have a similar cooling process as say your diesel engines.
And secondly thanks for the videos hope you do more!
I'm not 100% sure about cars and trucks, but on some motorcycles, there is an oil cooler that exchanges the heat with external air (Oil to air) rather than the two-step process Josh is describing where the oil exchanges heat with the (liquid) cooling system that then exchanges heat with external air.
Not trying to be rude, but two things I wanted to clarify:
Liquids actually ARE compressible. It's just that liquids have _extremely low_ compressibility factors that it's almost negligible.
For example, increasing the pressure on a quantity of water by one atmosphere will decrease the pressure by 46.4 parts per million.
So let's say you are given 1 gallon of water, and you want to compress it into 1 quart of water. One gallon is four quarts.
You would have to increase the pressure by log(0.25) / log(1 - 46.4 / 1000000) = 29876.3 atm = *approximately 29900 times atmospheric pressure.*
But this is why hydraulics work the way they do, because it takes so much pressure to compress liquids to any extent where errors would be significant that it's basically negligible.
Also, 212°F is _not_ less than half as hot as 450°F. The reason is because Fahrenheit is a _relative_ scale, not an _absolute_ scale. You have probably heard about the Kelvin scale, which is an absolute scale that is often used in chemistry and mechanical engineering, for example. There is also the much less known Rankine scale (°R), which is the absolute equivalent of Fahrenheit.
0°K = 0°R = -273.15°C = -459.67°F.
0°F = 459.67°R, 0°C = 273.15°K.
When you calculate percent changes between temperatures in Fahrenheit, you need to add 459.67° before dividing the temperatures. For Celsius you need to add 273.15°.
When you do this, you'll find that 450°F is actually *35.4%* hotter than 212°F.
Nerd Alert!
Actually those are pretty interesting calculations there. I did not know the heat scale was not linear, I did know about latent heat in fluids and how boiling is affected, but you obviously have a much deeper understanding of physics than I do. I didn't find your comment rude at all as you didn't insult me, you just pointed out some very technical errors.
Do you think i could pass the mechanic diesel civil service test with this knowledge
All i am saying is thank you for these videos, hopefully i can pass
Love you videos. Have a 3126 in my motorhome. In the process of doing a new head gasket and head I was told I have a scored cylinder, number 2. What could have caused this and if I ok doing the gasket and head anyway and drive it. What could be the consequences? Don’t want to do an engine rebuild or new reman motor. Any comment would really be appreciated. When you have time. Thank you
awesome series
What is the best grade oil to run in a cat c15 or 3406e?
wicked helpful again. appreciate the vids bro
Another good one Josh - thanks!
What oil is best for southern states? syn 5w-40 or 15w-40 Mobil Or delo or any other
Buddy I have always used since I overhauled my engine mobil 15w-40 and 1 gallon of Lucas and I checked at 600000 miles mains and they look like new no burns we all have different opinions
Luis Aguilar what about 15-40 rotella with one galon of lucas
@@Gstarxpress well I have used Rotella back then on my big cam 4 and on my 425 cat the thing is in the new Rotella thay made 15w-40 it looks like water when u drain it thats why I use mobil now and 1 gallon of Lucas haven't had any problems with damaging engine when its cold i don't use it at all on the lucas
I have seen a video of this guy in Florida he is a mechanic also and he uses gear oil well i might not go that way soon lol I'm good what I have been putting
Unfortunately the shop I work at wants us to prefill filters. Our trucks are severe duty...running in and out of limestone pits. They do get washed but not always before an oil change. To me it is a lot easier to guide a filter through to its spin on with out oil in the filter. Dirty air lines or electric cables are easy to hit when you have a filter that is full, as compared to one that has no oil in it. I can’t convince anyone that we increase contamination by prefilling filters.
That sucks, perhaps some manufacturer literature? Many state that you should not pre fill filters, but it may not help either.
I had a early 3406 that had the cooling jet in the cylinder block. Had a piston failure, so I dropped the main bearing and removed the top bearing. I pushed out a tin foil top from a oil jug. Someone prefilled the oil filter and poured the oil in the center hole which is the outlet. I guess they pushed in on the tin foil and it fell into the oil jug. Thus when they filled the oil filter it went into the outlet section. On start up right into the oil gallery and eventually into that cooling jet. I took another tin foil and tried to see if it could slide under the suction bell screen, it would not.
If you prefill ANY filter, you need a plug to block off the outlet. Thus you force the fluid to the dirty side first. I sometimes prefill fuel filters and I use a SOS line. I get a new one each time so it is clean. I can put the line into the dirty side and filter the fuel.
this is great and very helpful! also is anyone else taking actual notes🤣im on episode 4 and have 6 pages of notes🤣
I'm learning so much. I have a CAT C7 that consumes oil like a college kid consumes tequila. My blowby is a regular hotbox.
It's all a self changing oil system.
But these videos are really fun to learn from, I know jack shit about diesels.
I also like Roger The Mechanic, these two youtubers are bookends of knowledge.
The boiling hot water would scald your hand since your hand is cooler than the water, your hand would act as a heat sink and draw the heat into your hand. The hot oil also draws the heat away from the bottom of the hot cylinders. Laws of thermodynamics.
One of the best things to clean your dirty greasy hands is to use a bit of clean oil. It works amazing in a pinch.
I have a big cam Cummins and to fill the oil filter on the clean side, how does one do that?
Where does the dirty oil go after you chnage it out? is it able to be proccessed into clean oil again or does it have a use comercially?
New subscriber, great videos.
Which reminds me, hold on, got to turn on the oven ;)
Soon your Ford or Porsche can become a great garage antique or lovely lawn ornament.
T E S L A
Now I understand why when I do oil change on my cummins after 90 miles is black again
What in your opinion would cause a temporarily loss of oil pressure on a Diesel engine. Specifically a Cummins 450. Would a faulty or clogged oil filter?
Thanks for the video. Call stuff whatever you want we know what you mean. 🥇
Fluids are anything that flows, so air is also classified as a fluid as is any other gas all of which are compressible.
Correct. Its "liquids are not compressible".
You are correct. You probably shouldn't wear a white shirt with a white backdrop either, but I do.