You were about to get scammed by a blown head gasket, good thing you video tapped this diagnosis. They were gonna come back and say it never overheated before the coolant flush. Good on you to do the chemical exhaust gas in the coolant test before swapping the coolant. No one just asks for a coolant flush unless the vehicle is overheating. Warn out water pump or head gasket leak. Oil in the coolant was an easy to see deal, exhaust leak is harder to find if you don't heat the engine up.
Some people do care about maintenance. I have the brake fluid flushed every two years at a shop that will cycle the ABS, the transmission filter and fluid changed every 30,000 miles at a shop, and I change coolant every three years and of course oil changes at 25% on the OLM.
I like the fact that you ask why the customer wanted a coolant flush. I am a doctor and when patients tell me they recently stopped smoking or drinking, I always ask them why- frequently they could no longer breathe or turned yellow!
I remember driving and braking hard in my government vehicle while on moving surveillance in California sun. Believe me an hour or more of this type of driving caused severe brake fade . Vehicles? Gran pro and firebird. Crazy. Watching other TH-cam channels seems this head gasket stuff pretty common on VW & Audi. Very good video Kenny and I certainly hope your bride gets better and no serious issues.
What if she poured oil in the cooling system? Happens many times when customers don't know what they are doing! Maybe she wants the flush to get rid of the oil in the cooling system!
"People don't just come in for a coolant flush" lmao very true. Had a car today come in today for only a brake flush cuz their brake pedal would sink to the floor thinking there was air in the system (which there was no mention of in the Repair Order). So I perform it as requested thinking maybe the customer attempted to do his own brakes and cracked a line loose and air entered the system. Pedal felt great after until i drove it 2 miles after test driving and pedal sunk to the floor LOL. Long story short, dude needs a brake master cylinder.
Oh yea, brake pedal to the floor, I remember MY incident very well. Regardless I was driving on a turnpike, coming up on a tollbooth. Stepped on the brake pedal ALL THE WAY TO THE FLOOR. I went pass the tollbooth pumping the pedal. When I finally able to stop, a long ways from the tollbooth. I decided to just keep going, someone will pull me over somewhere. I never heard from anyone EVER. That was 9 years ago, so I think I’m safe. The culprit was a bad master cylinder. Thanks
If u mix old green with new orange it makes brown black sludge. Also I put shop air 200 psi in spark plug hole with fitting on compression stroke and single out which cylinder is leaking by bubbles rising up in radiator tank .
The first reference to mexico i ever heard was by Mike finnigan of hotrod magazine on the roadkill youtube channel. When they did stupid stuff on public srreets.
Had my head gasket go out on my pontiac years back. It was hard to diagnose because car wouldn't overheat until I really stepped on it on the freeway. Then it would cool down back to normal temp if I drove the regular freeway speed limit. I though it was the fans, temp sensors, etc. There was no oil at all in the dexcool, just tiny pieces of what seemed like dirt/debris or gasket. Couldnt tell. Finally did a combustion test on the radiator and sure enough, turned yellow. When I drained the oil it looked fine until right at the very end, some milk shake came out. Before that though, I drove it for weeks with it displaying these symptoms and could not detect any coolant/oil mixture on the dipstick or in the reservoir. Ended up changing the head gasket after doing the whole straight edge test on the block and heads and luckily didnt have any more issues for years after that with the engine. Seems like the intrusion was small enough it didn't cause too much overheating.
Nope, I'm not buying it Kenny. I would change the coolant because someone could of put oil in it. Also, those head gaskets are pretty good. The weakeast part is the oil filter housing and oil cooler seals that mount to the block. Just did one last week, look for oil and coolant running down the block. Revving it to the moon proves nothing, especially a lady driving it. Change the coolant and oil, add head sealer and AT205 and call it a day. Hope there will be an update video?
I had a similar experience with my son's Toyota Celica. It had oil in the coolant but the fluid test did not show any exhaust gas. We found that the gasket failed between the oil pressure to cam and a water passage. A lot of flushing of the cooling system after replacing the gasket. Keep wrenching Kenny!
Where are you located?! I need a mechanic like you brother! Your videos are extremely educational and easy to listen to. Would seriously drive VERY far to let you diagnose and work on my truck.
Wow, I just told my daughter to go get a coolant flush ( basically for maintenance reasons ) 90,000 miles. I also told her to change the shocks/ struts. She already did the transmission fluid change ( no flush ) and has the earl changed regularly . Thanks
Hi Kenny good health to you both , regarding road testing Canada is a cool place to test car road worthiness ,they will welcome a man with your rugged looks and outdoorsy way about your hands on stile, keep up the good work.😃
The 2.5 is one incredible engine inline 5 20v motor vvt also a very reliable motor the later generation having a headgaset failure is uncommon most people only have issues with the vacuum pump leaking and air system leaks if the repair is done I’d check the block and head clearance and if all good do a timing job and replace the thermostat and oil filter housing and that motor might go a while longer
The brakes in the front do the majority of the braking power the back brakes will only assist so they don’t get as hot. Most cars still have drum brakes in the back because in the early 2000s it was cheaper than disc brakes. I have a car that has discs in the front drums in the back.
Is the "new" stuff better? Just picked up a '13 Equinox with 170,000 on it. Just drove it from Las Vegas to MN. Did well on oil. Will be working on the area around the water pump. There's some leaking antifreeze there. Will be draining the cooling system. Should I put dexcool back in it?
Seems to me it's a cooler issue either trans or engine. Blown head gasket would turn it green immediately. If its engine oil its got some hydrocarbons in it
I ask for this kind of service because I keep up on all of my service needs. coolant changes, oil and brake fluid change and flush. I can't be the only one who keeps up on all the maintenance.
The absence of "milkshake" doesn't tell us anything more than I already know. If there was smellovision you would have smelled the coolant. It had a distinct smell of combustion & oil. Those tests were unnecessary & the clock is always ticking on the customers dime. It wouldn't change the fact that oil was mixed in the coolant. Thanks for watching & keep wrenching 🔧
@@neiliewheeliebin There's No engine internal oil cooler/coolant exchanger on a I4 engine and I didn't see a turbo on that unit which would be an external oil cooler.
I usually like to give the coolant a sniff, also. One dead giveaway to me is if i smell gas in it and i have before. As much as I personally despise Volkswagen, the 2.5 inline 5 is usually pretty stout. The oil leak is almost always the vacuum pump for the brake booster. Runs all over the transmission
Most likely nothing wrong with the head gasket if you follow the data. Most likely the coolant was mixed with an incompatible type (or just water) during previous work and turned to mud / rust - seen it many times. Flush it and fit the right type and monitor - probably needs Si-OAT for that car.
Constant flow of air bubbles in the coolant reservoir will reveal a defective head gasket. Imo no need in this type of test. Really no other way air bubbles can get in the coolant except thru the head gasket. In this case it's right on the edge though, it might go for awhile yet or it could go completely out tomorrow. I was to guess someone got that engine a bit too hot once but not enough to destroy it right away.
I would love to tell you the story how I got burnt my antifreeze got seconded degree burn. I was being stupid that one time and that's when it gets you
I always do all the maintenance on our vehicles based on the severe maintenance schedule because of the extreme heat, severe dust storms and the short trip stop and go driving! I can no longer do the work myself as a disabled veteran but I do have a local shop that is fair and priced reasonably and if he makes a mistake he takes care of it .. we all don't have Mr. Kenny and Mr. O to take care of us! Thanks Kenny and we're still praying for you and the Mrs and family!! God bless y'all
I often wonder if cooked coolant could give a false positive? Is the next step percentage leakage testing the cylinders? I have seen bars leaks leave a oily film floating but it has been a long time. They may have changed the formula since then.
Oil to coolant 'oil coolers' have been problematic on VW & Audi vehicles since their introduction in the '80s, failed VW/Audi coolers are a well known, common pattern failure item, ask any experienced VW/Audi Tech. Your first oversight mistake in this video was when you pulled the dipstick AFTER the road test, checking oil in a new to you vehicle should happen before your first engine start of that vehicle. Second oversight was when you removed the pressure cap, water (and coolant) have visibly separated and risen above whatever fluid sits below, you could/should have stuck a finger into the whatever fluid is below, see what sort of goo comes out. Heated, re-heated and re-re-heated coolant/oil intermix stinks. Internally leaking coolers pass fluid both ways. When running, oil pressure is (obviously) higher than cooling system pressure, oil (obviously) passes into the cooling system. After running, during cool down, cooling system pressure of 15-20 psi is obviously higher than zero oil pressure, crankcase gets coolant intermixed/contaminated. This next part is completely guesswork on my part, take it as such; First, I'm assuming a failed cooler and a good head gasket (partly because it's a VW), I'm guessing that, due to the duration of your blue fluid/Block Check test, enough heat transferred in the cooling system to release combustion byproducts from the intermixed oil which then, faintly, registered as a color change. If/when combustion gasses are forced into the cooling system, especially when RPM/combustion pressures are increased (as you did), the results are dramatically conclusive and near instantaneous, a Blue Fluid test cannot go otherwise. In my opinion, your Blue Fluid test results were ambiguous. Google tells me that combustion pressures run between 300 to 2,500 psi, anywhere in that range is going to show NOW when Blue Fluid tested. Blue Fluid; In my experience, Blue Fluid reveals combustion gasses in the cooling system, faster and better than other methods combined. Draw some tailpipe gas into your Blue Fluid tester, see how fast it changes, combustion gas in the cooling system is just like that only A LITTLE slower. Here's your Blue Fluid economy tip; once your Blue Fluid has changed color and you're done testing with it, don't dump it, instead draw fresh air through the tester until the Blue Fluid's original color is restored, save that fluid for the next test. Yeah, I'd keep color restored Blue Fluid in separate containers from fresh. A Blue Fluid kit should be in every Tech's toolbox.
Isuzu oil coolers; This one is a one time, anecdotal example, unlike VW/Audi. “Other Guy” (OG, like “Other Shop” but at the other end of the same shop) replaced a complete engine attempting to address an oilcoolant intermix problem. OG transferred all the external accessories, including the oil cooler to the new engine, the P'up ended up in my bay to figure out why the intermix problem persisted. With the cooler removed, I blocked off one coolant passage and applied shop air regulated to 20 psi to the other port and submerged it all in a bucket of water expecting bubbles, I got nothing, I'm stuck at zero, no progress. This engine's cooler attached to the engine and routed its oil through two LONG banjo bolts. While my pressure testing set up was still connected, I released pressure and applied vacuum. When I pinched off all four oil passages with fingertips, those fingertips got (gently, no injuries occurred) sucked into the oil passages' openings, problem identified. One more common pattern failure intermix example, I4, SOHC Saturns develop a head crack in the #5 cam saddle, oil pressure when running, cooling system pressure during cool down. Signed, ~Oil Cooler D'vivre
I had an problem like that done the same test but didn’t change color but had oil in cooling system turned out to be transmission cooling lines in radiator.
I bought a 2014 F150 new and had the oil changed and tires rotated with brake inspection at every 5000 miles. At 50,000 miles I asked for all fluids to be drained and changed ( no flushes please). Oil, coolant, diff fluid, brake fluid, power steering fluid. I didn’t get pushback or questions. I’m not a mechanic. Am I the only customer who does this?
I have a question I own a 2004 mini Cooper r50 base model it over heated a couple of times the thermostat was stuck I replaced it the overheating stopped but everytime I start the engine and run for about ten to fifteen minutes I come back and check the coolant reservoir and a little coolant is gone I can't find any leaks anywhere do you have any suggestions as to where the coolant is going.
Hi, It's Mrs Wrenching! You should go on our Facebook group Backyard Mechanics (answer all the questions) put the year, make & model of your vehicle, if it's you have a check engine light on, in your post. Be sure to include what is happening with your vehicle & what you have done to fix it so far. There are a lot of techs that may be able to help. The link is toward the bottom of the video. Keep wrenching!
Oh boy, that's a no no. Not washing your hands before getting in to test drive. I really hate it when I pick up my nice clean car and the interior and hood and door inside and out have black grease everywhere. Mechanics, don't test drive people's cars until you clean yourself good!
Why wouldn't you do the testing before charging the customer for an oil change, you could top the oil off for a few dollars prior to testing. Wouldn't the contaminated coolant affect that test, what if someone ac accidently put oil in the coolant? Wouldn't combustion pressure cause bubbles in your test rig?
15:50 Mr. Kenny.. Whenever I get results like that when I'm not sure what they mean or I think I'm seeing something, I go back and look at the video of how it looked originally versus how it looks now. It's at that point where if you just think of everything as a whole if you think of what it's telling you if it either is or isnit's because then you'd have to come up with an ultimate explanation of how it's doing what it's doing. In my case I was able to determine if my car probably needs a water pump because my water pump began to leak so I'm gonna have to get that hole procedure done because as I understand it if you're doing the water pump you're doing the timing belt so you might as well do the head gasket. And my stupid self left my MLS gaskets up in New Jersey it looks like they're gonna be needed............. I think I put them in my room because I think I took them out of my car and now it looks like I shouldn't have done that... I'll probably get a specific pair mail to the shop. But that's what I do just to try to be helpful
The brake system could have air in it & the fluid may need to be changed & the system bled,in my car it stops much better after I bleed the brakes. We've been doing a brake reline, drum & rotor change on my dads 2013: model Holden (Chevrolet) Colorado RG & it stops better after replacing the rear brake shoes & brake drums. We still have to do the front end yet,my dads complaint was that the brake pedal felt too deep meaning that there was too much travel in brake pedal. It's done over 200,000 kilometres or 120,000 miles now & my sister has pulled a horse trailer with it so it's done a fair bit of work now !
It took quite a bit of doodling around to get a failed test so that engine doesnt appear to be leaking much. Despite stinking to high heaven. Not sure if VW uses Dexcool but i had nothing but problems with it until i flushed over to ethylene glycol when my small GM truck was new. 4300 Vortec. Dex is junk imo. Maybe change the oil and keep driving til it is a problem for sure.
You were about to get scammed by a blown head gasket, good thing you video tapped this diagnosis. They were gonna come back and say it never overheated before the coolant flush. Good on you to do the chemical exhaust gas in the coolant test before swapping the coolant. No one just asks for a coolant flush unless the vehicle is overheating. Warn out water pump or head gasket leak. Oil in the coolant was an easy to see deal, exhaust leak is harder to find if you don't heat the engine up.
I hope your wife is getting better, will keep praying for her. Thanks for the videos and stay safe.
Yes sir, we're still praying for you both and the rest of your family!! God bless y'all
Some people do care about maintenance. I have the brake fluid flushed every two years at a shop that will cycle the ABS, the transmission filter and fluid changed every 30,000 miles at a shop, and I change coolant every three years and of course oil changes at 25% on the OLM.
That's great! I love when customers are passionate about car maintenance. Thanks for your comment & watching the channel. Keep wrenching 🔧
Hope you get more details on why a cooling flush was requested !
"Secret Testing Facility" in Mexico!
Love it!😂
I like the fact that you ask why the customer wanted a coolant flush. I am a doctor and when patients tell me they recently stopped smoking or drinking, I always ask them why- frequently they could no longer breathe or turned yellow!
I have seen the dexcool eat away headgasket surfaces on aluminum heads leaving pits.Seen this with the 3400 V6s
Use to see it with aluminum intake coolant ports
Kenny is going to put the Travel Channel out of business with those exotic trips.
I remember driving and braking hard in my government vehicle while on moving surveillance in California sun. Believe me an hour or more of this type of driving caused severe brake fade . Vehicles? Gran pro and firebird. Crazy. Watching other TH-cam channels seems this head gasket stuff pretty common on VW & Audi. Very good video Kenny and I certainly hope your bride gets better and no serious issues.
For brake checks, I like using a digital thermometer to check all 4 wheels
Kenny, don't bother explaining what Mexico is. Your true fans already know. We get it. That's why we keep watching.
Thanks brother! Keep wrenching 🔧
I guess I’m not a true fan despite watching and thumbing up every episode. I did not know it.
I learned something from this video. Thanks Kenny!
Thanks for watching & taking the time to leave a comment. I appreciate you! Keep wrenching 🔧
What if she poured oil in the cooling system? Happens many times when customers don't know what they are doing! Maybe she wants the flush to get rid of the oil in the cooling system!
"People don't just come in for a coolant flush" lmao very true. Had a car today come in today for only a brake flush cuz their brake pedal would sink to the floor thinking there was air in the system (which there was no mention of in the Repair Order). So I perform it as requested thinking maybe the customer attempted to do his own brakes and cracked a line loose and air entered the system. Pedal felt great after until i drove it 2 miles after test driving and pedal sunk to the floor LOL.
Long story short, dude needs a brake master cylinder.
Oh yea, brake pedal to the floor, I remember MY incident very well. Regardless I was driving on a turnpike, coming up on a tollbooth. Stepped on the brake pedal ALL THE WAY TO THE FLOOR. I went pass the tollbooth pumping the pedal. When I finally able to stop, a long ways from the tollbooth. I decided to just keep going, someone will pull me over somewhere. I never heard from anyone EVER. That was 9 years ago, so I think I’m safe. The culprit was a bad master cylinder. Thanks
If u mix old green with new orange it makes brown black sludge.
Also I put shop air 200 psi in spark plug hole with fitting on compression stroke and single out which cylinder is leaking by bubbles rising up in radiator tank .
The first reference to mexico i ever heard was by Mike finnigan of hotrod magazine on the roadkill youtube channel. When they did stupid stuff on public srreets.
Had my head gasket go out on my pontiac years back. It was hard to diagnose because car wouldn't overheat until I really stepped on it on the freeway. Then it would cool down back to normal temp if I drove the regular freeway speed limit. I though it was the fans, temp sensors, etc. There was no oil at all in the dexcool, just tiny pieces of what seemed like dirt/debris or gasket. Couldnt tell. Finally did a combustion test on the radiator and sure enough, turned yellow. When I drained the oil it looked fine until right at the very end, some milk shake came out. Before that though, I drove it for weeks with it displaying these symptoms and could not detect any coolant/oil mixture on the dipstick or in the reservoir. Ended up changing the head gasket after doing the whole straight edge test on the block and heads and luckily didnt have any more issues for years after that with the engine. Seems like the intrusion was small enough it didn't cause too much overheating.
Got to love the “Mexico with no palm trees 🌴
Very small headgasket leak that only shows under load. Worst at hwy speeds going through the mountains, mine would puke coolant.
Nope, I'm not buying it Kenny. I would change the coolant because someone could of put oil in it. Also, those head gaskets are pretty good. The weakeast part is the oil filter housing and oil cooler seals that mount to the block. Just did one last week, look for oil and coolant running down the block. Revving it to the moon proves nothing, especially a lady driving it. Change the coolant and oil, add head sealer and AT205 and call it a day. Hope there will be an update video?
Wow, an Octolagen with 166,000 miles, and it sounds pretty good.
That you are getting consistent gas there, and it does not stop, also points to a blown head gasket.
I had a similar experience with my son's Toyota Celica. It had oil in the coolant but the fluid test did not show any exhaust gas. We found that the gasket failed between the oil pressure to cam and a water passage. A lot of flushing of the cooling system after replacing the gasket. Keep wrenching Kenny!
An American doing geography-jokes is just next level trolling! Keep it up!
Where are you located?! I need a mechanic like you brother! Your videos are extremely educational and easy to listen to. Would seriously drive VERY far to let you diagnose and work on my truck.
Wow, I just told my daughter to go get a coolant flush ( basically for maintenance reasons ) 90,000 miles. I also told her to change the shocks/ struts. She already did the transmission fluid change ( no flush ) and has the earl changed regularly . Thanks
Hi Kenny good health to you both , regarding road testing Canada is a cool place to test car road worthiness ,they will welcome a man with your rugged looks and outdoorsy way about your hands on stile, keep up the good work.😃
The 2.5 is one incredible engine inline 5 20v motor vvt also a very reliable motor the later generation having a headgaset failure is uncommon most people only have issues with the vacuum pump leaking and air system leaks if the repair is done I’d check the block and head clearance and if all good do a timing job and replace the thermostat and oil filter housing and that motor might go a while longer
I like the Mexico joke,lol😅😂test field, great video Mr Kenny
Right on, brother!
Intressant video, för en hobbymekanikers synvinkel som mig själv så kan det vara lite trixigt att diagnostisera ett problem med cylinderpackningen 👍
tack. Jag uppskattar dina vänliga ord och att du tittar på kanalen. fortsätt vrida 🔧
The brakes in the front do the majority of the braking power the back brakes will only assist so they don’t get as hot. Most cars still have drum brakes in the back because in the early 2000s it was cheaper than disc brakes. I have a car that has discs in the front drums in the back.
The oil coolers on those fail all the time. Would change the oil cooler and that stupid plastic oil filter housing that it attaches to
I hope Mrs. Wrenching is doing better
Oh yeah I remember the first dexcool. It gunked up everything.
Is the "new" stuff better?
Just picked up a '13 Equinox with 170,000 on it. Just drove it from Las Vegas to MN. Did well on oil. Will be working on the area around the water pump. There's some leaking antifreeze there. Will be draining the cooling system. Should I put dexcool back in it?
@@dans_Learning_Curveit definitely works like a champ these days. Just like the regular green antifreeze but it’s orange.
Seems to me it's a cooler issue either trans or engine. Blown head gasket would turn it green immediately. If its engine oil its got some hydrocarbons in it
I ask for this kind of service because I keep up on all of my service needs. coolant changes, oil and brake fluid change and flush. I can't be the only one who keeps up on all the maintenance.
The engine oil has no milkshake underneath the filler cap, suggesting no coolant in the oil. I’d do a compression test and a flow meter test.
The absence of "milkshake" doesn't tell us anything more than I already know. If there was smellovision you would have smelled the coolant. It had a distinct smell of combustion & oil. Those tests were unnecessary & the clock is always ticking on the customers dime. It wouldn't change the fact that oil was mixed in the coolant. Thanks for watching & keep wrenching 🔧
@@WrenchingWithKenny He's right in being suspicious, its more likely to be a high pressure leak from the oil cooler IMO think about it
@@neiliewheeliebin There's No engine internal oil cooler/coolant exchanger on a I4 engine and I didn't see a turbo on that unit which would be an external oil cooler.
@rolomaticz5009 It's part of the oil filter housing, very common component
What if you pressurize the cooling system instead and stick a borescope down each spark plug hole? What would you see?
Did you mean to say 'Dex-Kill'@ 1:24?😂
Mexico (Kenny's Proving Grounds)
Oh wow, is that an octologon?
I usually like to give the coolant a sniff, also. One dead giveaway to me is if i smell gas in it and i have before. As much as I personally despise Volkswagen, the 2.5 inline 5 is usually pretty stout. The oil leak is almost always the vacuum pump for the brake booster. Runs all over the transmission
Most likely nothing wrong with the head gasket if you follow the data. Most likely the coolant was mixed with an incompatible type (or just water) during previous work and turned to mud / rust - seen it many times. Flush it and fit the right type and monitor - probably needs Si-OAT for that car.
I wonder if the oil in the coolant might give you a false positive? Usually a head gasket will change the color quick
Constant flow of air bubbles in the coolant reservoir will reveal a defective head gasket. Imo no need in this type of test. Really no other way air bubbles can get in the coolant except thru the head gasket. In this case it's right on the edge though, it might go for awhile yet or it could go completely out tomorrow. I was to guess someone got that engine a bit too hot once but not enough to destroy it right away.
They probably put stop leak crap in it that’s y it was that color
I would love to tell you the story how I got burnt my antifreeze got seconded degree burn. I was being stupid that one time and that's when it gets you
I always do all the maintenance on our vehicles based on the severe maintenance schedule because of the extreme heat, severe dust storms and the short trip stop and go driving! I can no longer do the work myself as a disabled veteran but I do have a local shop that is fair and priced reasonably and if he makes a mistake he takes care of it .. we all don't have Mr. Kenny and Mr. O to take care of us! Thanks Kenny and we're still praying for you and the Mrs and family!! God bless y'all
i have used dexcool since 96, never had an issue
There are people who neglect the change for many years.
@@gabrielsierra6890 yup and ppl that mixed with the green coolant
if you follow gm recommendations , no issues , at least none for me
I always carry a broom and pan to clean up after the immature ones. Someone has to do it!
Interesting video, thanks...
I wonder what customer said !
I love “Mexico “. Us mechanics are always joking around.
I was expecting to see roving banditos in the parking lot
I often wonder if cooked coolant could give a false positive? Is the next step percentage leakage testing the cylinders? I have seen bars leaks leave a oily film floating but it has been a long time. They may have changed the formula since then.
Oil to coolant 'oil coolers' have been problematic on VW & Audi vehicles since their introduction in the '80s, failed VW/Audi coolers are a well known, common pattern failure item, ask any experienced VW/Audi Tech.
Your first oversight mistake in this video was when you pulled the dipstick AFTER the road test, checking oil in a new to you vehicle should happen before your first engine start of that vehicle.
Second oversight was when you removed the pressure cap, water (and coolant) have visibly separated and risen above whatever fluid sits below, you could/should have stuck a finger into the whatever fluid is below, see what sort of goo comes out.
Heated, re-heated and re-re-heated coolant/oil intermix stinks.
Internally leaking coolers pass fluid both ways.
When running, oil pressure is (obviously) higher than cooling system pressure, oil (obviously) passes into the cooling system.
After running, during cool down, cooling system pressure of 15-20 psi is obviously higher than zero oil pressure, crankcase gets coolant intermixed/contaminated.
This next part is completely guesswork on my part, take it as such;
First, I'm assuming a failed cooler and a good head gasket (partly because it's a VW), I'm guessing that, due to the duration of your blue fluid/Block Check test, enough heat transferred in the cooling system to release combustion byproducts from the intermixed oil which then, faintly, registered as a color change.
If/when combustion gasses are forced into the cooling system, especially when RPM/combustion pressures are increased (as you did), the results are dramatically conclusive and near instantaneous, a Blue Fluid test cannot go otherwise.
In my opinion, your Blue Fluid test results were ambiguous.
Google tells me that combustion pressures run between 300 to 2,500 psi, anywhere in that range is going to show NOW when Blue Fluid tested.
Blue Fluid;
In my experience, Blue Fluid reveals combustion gasses in the cooling system, faster and better than other methods combined.
Draw some tailpipe gas into your Blue Fluid tester, see how fast it changes, combustion gas in the cooling system is just like that only A LITTLE slower.
Here's your Blue Fluid economy tip; once your Blue Fluid has changed color and you're done testing with it, don't dump it, instead draw fresh air through the tester until the Blue Fluid's original color is restored, save that fluid for the next test. Yeah, I'd keep color restored Blue Fluid in separate containers from fresh.
A Blue Fluid kit should be in every Tech's toolbox.
Isuzu oil coolers;
This one is a one time, anecdotal example, unlike VW/Audi.
“Other Guy” (OG, like “Other Shop” but at the other end of the same shop) replaced a complete engine attempting to address an oilcoolant intermix problem. OG transferred all the external accessories, including the oil cooler to the new engine, the P'up ended up in my bay to figure out why the intermix problem persisted.
With the cooler removed, I blocked off one coolant passage and applied shop air regulated to 20 psi to the other port and submerged it all in a bucket of water expecting bubbles, I got nothing, I'm stuck at zero, no progress.
This engine's cooler attached to the engine and routed its oil through two LONG banjo bolts. While my pressure testing set up was still connected, I released pressure and applied vacuum. When I pinched off all four oil passages with fingertips, those fingertips got (gently, no injuries occurred) sucked into the oil passages' openings, problem identified.
One more common pattern failure intermix example, I4, SOHC Saturns develop a head crack in the #5 cam saddle, oil pressure when running, cooling system pressure during cool down.
Signed,
~Oil Cooler D'vivre
I had an problem like that done the same test but didn’t change color but had oil in cooling system turned out to be transmission cooling lines in radiator.
Absolutely, because trans lines are under higher pressure. Thanks for watching & keep wrenching 🔧
9:08 Mr. Kenny, I have heard that that fluid changes color back after the test. Ready to be re-used. Is this true?
5:41 forbidden milkshake! A vw with a head gasket issue?never heard of!*sarcasm*😂
😂😂😂😂
Mexico...if you know, you know...
I'd like to know what the lady decided.
She wants to have the work done. I will make a video of the repair if I have time. Thanks for your comment & watching the channel. Keep wrenching 🔧
Did you see any of the dragons while on the island? Hilarious Maybe somebody added something that did not belong in the coolant.
Nice Video. Also what's the story behind the ford escort that's been on the lift for a long time in the shop?
Customer has me putting an engine in. It will boost the cars worth 😎 It is a sentimental car for the customer. I get that completely
I bought a 2014 F150 new and had the oil changed and tires rotated with brake inspection at every 5000 miles. At 50,000 miles I asked for all fluids to be drained and changed ( no flushes please). Oil, coolant, diff fluid, brake fluid, power steering fluid. I didn’t get pushback or questions. I’m not a mechanic. Am I the only customer who does this?
It would turn yellow rite away if it had a combustion gases in the coolant
I have a question I own a 2004 mini Cooper r50 base model it over heated a couple of times the thermostat was stuck I replaced it the overheating stopped but everytime I start the engine and run for about ten to fifteen minutes I come back and check the coolant reservoir and a little coolant is gone I can't find any leaks anywhere do you have any suggestions as to where the coolant is going.
I am going to check the heater coil for leak's.
Hi, It's Mrs Wrenching! You should go on our Facebook group Backyard Mechanics (answer all the questions) put the year, make & model of your vehicle, if it's you have a check engine light on, in your post. Be sure to include what is happening with your vehicle & what you have done to fix it so far. There are a lot of techs that may be able to help. The link is toward the bottom of the video. Keep wrenching!
Thank you.
Oh boy, that's a no no. Not washing your hands before getting in to test drive. I really hate it when I pick up my nice clean car and the interior and hood and door inside and out have black grease everywhere. Mechanics, don't test drive people's cars until you clean yourself good!
Why wouldn't you do the testing before charging the customer for an oil change, you could top the oil off for a few dollars prior to testing. Wouldn't the contaminated coolant affect that test, what if someone ac accidently put oil in the coolant? Wouldn't combustion pressure cause bubbles in your test rig?
Got to be a leak somewhere to get that much air out through the degas/overflow.
It's probably had K&W put in it at some point.
That’s K Seal on that coolant reservoir cap. She’s got a bad head gasket or worse.
15:50 Mr. Kenny.. Whenever I get results like that when I'm not sure what they mean or I think I'm seeing something, I go back and look at the video of how it looked originally versus how it looks now. It's at that point where if you just think of everything as a whole if you think of what it's telling you if it either is or isnit's because then you'd have to come up with an ultimate explanation of how it's doing what it's doing. In my case I was able to determine if my car probably needs a water pump because my water pump began to leak so I'm gonna have to get that hole procedure done because as I understand it if you're doing the water pump you're doing the timing belt so you might as well do the head gasket. And my stupid self left my MLS gaskets up in New Jersey it looks like they're gonna be needed............. I think I put them in my room because I think I took them out of my car and now it looks like I shouldn't have done that... I'll probably get a specific pair mail to the shop. But that's what I do just to try to be helpful
Power brake the engine while doing the test
Does anyone else at your shop make the youtube video's ?
Nope, just me.
That test is only for combustion gases correct?
That is correct
Going to Mexico. Are you a street racer.
😂😂😂😂
No Sound!
The brake system could have air in it & the fluid may need to be changed & the system bled,in my car it stops much better after I bleed the brakes.
We've been doing a brake reline, drum & rotor change on my dads 2013: model Holden (Chevrolet) Colorado RG & it stops better after replacing the rear brake shoes & brake drums.
We still have to do the front end yet,my dads complaint was that the brake pedal felt too deep meaning that there was too much travel in brake pedal.
It's done over 200,000 kilometres or 120,000 miles now & my sister has pulled a horse trailer with it so it's done a fair bit of work now !
It took quite a bit of doodling around to get a failed test so that engine doesnt appear to be leaking much. Despite stinking to high heaven. Not sure if VW uses Dexcool but i had nothing but problems with it until i flushed over to ethylene glycol when my small GM truck was new. 4300 Vortec. Dex is junk imo. Maybe change the oil and keep driving til it is a problem for sure.
The liquid is still blue
Customer's
Running at three grand free wheeling if it didn't have one it does now
Free revving at 3000 isn't going to hurt anything.
It's Raciest.
Looks like someone put oil in it by mistake kenny
Your test equipment sucks...... jus’sayin...... usually good testing equipment will change blue to yellow very quickly if there is an issue.
It also depends on how severe the damage is. On the brightside, we caught this early. Keep wrenching 🔧
Us it possible the test fluid was just old ? Anything reactive like this, would gave a limited shelf life after opening ..
No, it was brand new fluid.
Trying to make it fail
Wow never saw a mechanic make it fail, will never watch your videos again.