SLUDGE! 13 Year Late Oil Change & First Start - Daihatsu Cuore Avanzato TR-XX R4 Project Episode 2
ฝัง
- เผยแพร่เมื่อ 4 ส.ค. 2017
- NEVER seen oil sludge this bad! Draining really old oil from my Daihatsu Cuore Avanzato TR-XX R4 to reveal some SERIOUS gunk. Let's get that out, and see if we can start the car for the first time!
The FAQs:
"So this is a Mira, right?"
- Yes, sort of. It is basically identical to the L500 (specifically, the L512S) Daihatsu Mira TR-XX Avanzato R4.
"Don't Mighty Car Mods have one of these?"
- Again, sort of. They're a very close relative of the Daihatsu MCM's Marty is a big fan of. The car in their Kei To The City film (and Marty's later conversion project) share much of this car's DNA.
"Didn't Regular Car Reviews drive one of these?"
- Yes! On the RCR UK trip, they drove an almost identical UK-spec Cuore Avanzato. I actually met the owner at the RCR UK meetup. It's actually my Suzuki Cappuccino that they mention in the video about the meet.
"What does Cuore Avanzato even mean, anyway?"
- It's Italian, actually. "Cuore" means "Heart", and "Avanzato" means "Advanced".
"I drove one of these in Gran Turismo, and it said it was front wheel drive, not all wheel drive?"
- They did 2WD/FWD versions of the turbo Miras in Japan, too, the "4" in the name is what denotes the AWD/4WD/4x4 version.
"Is it a kei car?"
- Yes, it meets the kei car regulations, though whether it "counts", being a UK car, is an interesting question.
"Is it JDM?"
- No, it's a UK model, there are some subtle differences/modifications for the UK market, though nothing earth shattering.
"Did they really only make 80 of them?"
- Of the UK road car version, yes, give or take a couple, plus there were about 20 rally-prepared ones. The Japanese equivalent is far more common.
"Is it a 3 cylinder engine?"
- No, it's a 4 cylinder, the Daihatsu JB-JL 16v engine, though it meets the same 660cc capacity limit for kei cars that the three cylinders used elsewhere do.
"Is it turbocharged?"
- Yes, with a small top-mount intercooler.
"How does the AWD work?"
- There is a selectable drive to the rear coming off the gearbox, with a viscous coupling between the rear differential and the propshaft to allow for the difference in wheel speeds when cornering.
"How much does it weigh?"
- 768kg, per the UK original specification sheet.
"Where can I get one?"
- To be perfectly honest, it's a lot easier to find a JDM one as an import than a UK car, but if you keep an eye on Ebay and forums, one might come up.
"Is it for sale?"
- I'm afraid not, no.
Title music:
"RetroFuture Clean"
Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
creativecommons.org/licenses/b... - ยานยนต์และพาหนะ
I got a weird sense of satisfaction watching this.
Eric Fortune Jr. Hell yeah getting all the nasty gunk out of there after a decade its so satisfying seeing it get clean
Hell yes it's awesome seeing that engine running. And that old oil man that was NASTY!
same
Eric Fortune Jr. same
Eric Fortune Jr. That's crazy because I seen old muscle cars that sat for 30 years with old school.oil and it never looked like that.
I don't know why I found that sludge coming out so satisfying, like getting relief after a bout of the runs.
How’s that horse schlong of yours dear boy ?
Sold as: Just one elderly pre-owner, serviced according to manual.
lmao
Timo Witte hilarious and true.!
near mint condition
The elderly probably did lots of short trips (grocery store and back). That’s always hard on oil
You missed: Always in garage
Me: Watches one Chris Fix video.
TH-cam: *SLUDGE!*
Me too!
Actually same 😂
Same!!! Lol
Yea
This feels like the mechanical equivalent to those pimple popping videos.
Dr Sludge Pumper!
😜😜😜
Pretty much
Haha yes
I was thinking more like diarrhea
As a mechanic, I have seen shitty oil, but this beats it all flat out
Goultek i had a 2007 nissan murano come in last week, customer never heard of an oil change, looked just like this in there, couldnt believe my eyes
@@bballkid7409 probably a woman, huh?
@@sundstrom193 slightly sexist but eh probly true aswell
@@sundstrom193 bollocks I had my timing belt serpentine chain etc changed when I got my car as seen to hadn't been done, to uhooo a woman and had a oil and filter change go to synthetic oil by the way and a flush. Yes us women aren't bloody idiots and don't sit there licking windows asswipe
@@tracyfun6918 this comment is great! I think from the wording you're from the UK? I'm from Australia but I like the funny insults and stuff! have a great day and thanks for the laughs!
2:32 me after 4 burritos and a glass of all natural mexican h2o
Lmfao
Ouch
😂
That's why we don't drink directly from the faucet like animals. And we drink purified water.
Just goes to show how brilliant Japanese engineering is, if it managed to run this far.
Me after I eat at Taco Bell at 2:46.
Chris Barrows I almost died
Exactly what I thought of.
I wanted to say the same thing LMAO
Scrolled looking for Taco Bell reference. Was not disappointed.
I was fixing to say the same thing lol
In a few days, I'm going to pick up a Fiero that's been sitting for 20 years. I guess I have this to look forward to haha. Great video though!
Well we are glad it turned out well. I loved the series
Lmao never thought to find this legend here
Keep working hard brother watched every episode so far !
A Fiero? Look forward to fixing it and pray it stays fixed.
YOOOO! WHERE IT ALL STARTED!
The fluids and time spent on this car are way more than the car is worth! It's a Daihatsu!
You may not be knowing but Daihatsu makes best Diesel generators of the world. It's a very good company.
Also, Diahatsu is owned by Toyota.
If you oove cars you won't give it so much importance.
@@parthasdasgupta i have daihatsu charade 1.3 16v 1991 efi, 90hp on 700kg is sick. It has 200.000km and its working excellent, and engine is really quite when its working
@@ivanbradic8973 my mate has a charade 1.6 turbo, its a beast 😂 Daihatsu's can be awesome sleepers 👌
2:32= me on the toilet after a night of heavy beers and bad food choices 😂
2:44 That moment when you finally let it all out..
*Let it go plays in background*
Turbo is both oil lubricated and water cooled. It's an IHI RHF3 VQ27, which is unbelievably hard to get hold of in the UK. Hoping yours is all good!
Ah, thanks for that, useful to know! Yes, I hope it's ok, but I'll just have to see. With any luck it'll be alright, but if not, I'd at least hope it'll be in a fit enough state for rebuilding.
we can rebuild it back for you.
2:30 when you eat a Lidl ready meal that's two days out of date and you hit the bog
That old gas must have turned to gel also. Would have like to seen the clean up on that, also it must have clogged the injectors
Old gas doesnt gel. It breaks down and turns basically into paint thinner.
@@TeamTopKick I did not know that.
@@TeamTopKick paint thinner works great as engine fuel.
Would’ve just been easier to remove the oil pan and clean it instead of doing all that extra hard stuff
@@hydronationpakistan5167 he said he had put on a new oil filter, even showed us where to access it. 🤦🏾♂️
He must be the same owner of that car! Lol
@@sizzlacalunji oil pan!
@@fergap9438 wasn't responding to the OP. Notice who I responding to. That person’s comment is no longer there. For context, that person I was responding to had said that the vlogger didn’t even mention replacing the oil filter.
He addresses that in a later video. The oil pan is blocked by the subframe and a load of other components so sadly not possible
Wouldn't be easy to just take the oil pan off and clean properly ?
Tommy Gun yeah, I've been thinking of that as well. But maybe the sump is welded in or by just removing the sump, the oil elsewhere might not get cleaned out. I'm not an expert, just my predictions
Perfect idea, assuming you have the tools to do it right such as an engine hoist.
I'm sure that was factored into his thinking, hence his solution.
Tommy Gun no, no , and fucking hell no.
Option 1:
Hey man i need my oil changed.
Sure let me just get around to thoose 300 rusty bolts before i lift the engine out of the car and remove the oilpan, and give it a good cleaning before i put new oil in there.. And also your going to need alot of new hooses, gaskets, bolts, etc etc, since they broke during dismantling. So umh yeah Thats going to be a 10.000 dollar oil change.
Or here is option 2: unscrew the plug, wait for oil to pour out, use solvents to clean pan, before putting in new oil and bam u done. I dunno like 100 dollars?
muuundo tarde
Best explanation. Tbh. Rusty bolts will break... =more problems.
AND the oil pump that contains dirty shit.
Man your star trek tng reference made my day!!! You made a huge fan today!
Almost no drip from that much sludge automatically means I remove the oil pan. That will allow as much of the sludge from the pan to be removed as possible as well as removing every last drop of oil that has sunk to the pan. You can't clear out the oil pickup mesh that sucks up the oil up to the upper components of the engine. Third and final thing of the initial 3 steps is to take out the spark plugs so you can lubricate the walls of the cylinders with Fogging Oil. Even straight oil into the cylinders in a small amount is good if no fogging oil spray is not available. You scraped up the cylinder walls with the piston rings as well as scraped the rings, themselves, by not doing that. It shortens the life of the engine and/or causes oul-burning. You're going to say too much for a car that may not start up but it sure was worth it with that car.
Removing the oil pan first is exactly what I would've done too after I made sure the motor wasn't seized up.
The sump of all fears
Nice, nice pun there
Think I would have bought 8 liters of cheapest oil i could and be doing 2x oil changes after 100 miles each, then putting in castrol.
Well, I kind of did, in that I had the Castrol on the shelf, so it was "free" to use.
I would use castrol for the flusb then buy real oil later
In USA the Castrol company was sued for violating consumer protection laws. Castrol is now considered low-grade oil (even when synthetic).
Only way to tell if oil is good? Do an oil analysis. I had oil that still looked okay, but analysis showed it had very little anti-wear additives (and was starting to turn acidic)
.
@@electrictroy2010 interesting yet in the UK its sold as a premium brand.
I really wanted to see how it looked under the valve cover 😫
I'd say just remove the entire head and soak it in diesel
I would've liked to have seen that myself.
Why didn’t he just drop the pan?
Man...at first sight of that goo, I'd have a beer, drop the pan, pull the rocker covers, take out the spark plugs, and fog the cylinders, diesel flush the whole thing, have a beer, blow the turbo lines, swap the coolant, remove the mouse nest from the air intake, have a beer, siphon the old gas out, crank it with fresh gas with the fuel line disconnected at the motor, have a beer, reassemble everything with new gaskets, have a beer and order pizza, do a sacrificial oil change, and then try starting it.
That goo is like cholesterol in a fat man. It's throughout the engine and will simply roam around and contaminate the new oil...fatal for a turboed motor.
I hope it's still running.
Based on these comments I’m really worried about y’alls eating habits. 😆
That is bad right there. But it makes me happy to see a car like thos brought back to life
I finally changed the oil in my lawnmower. I bought it back in 2004. I was expecting a gooey mess, but the oil looked okay on the dip stick. I used a oil extractor without a problem.
There is something very satisfying about bringing old cars back to life
A friend had old diesel mondeo that the previous owner had neglected that was in a worse state than that. Several flushes and 3 oil changes later plus a 2nd hand turbo and it drove great. He wouldn't have bothered if he had to buy the vehicle but the man who gave it to him said the turbo had gone. No surprise really given the state of the oil. I have a mk3 mondeo 2.0 petrol that I've replaced the tumbler flaps on that has covered 140,000 and the engine is virtually silent even at speed. Great video.
How many miles had the mondeo done without an oil change?
2:32 when a bad pint catches up with you the next morning.
That's a crazy thick strut bar. Very interesting video!
This car used to be my first one, actually! (Although, to be fair, it was base model of the car but had same model year)
It's a seriously underrated car that really needs to make appearances in video games such as Forza. Sure it has appeared in older Gran Turismo titles but it doesn't even have it's quirky 90s interior to feel nostalgic throughout!
Haha cars got diarrhoea
+steward Diarrhea**
Choleric diarrhea.
lol i was gonna say the same thing
Constipation
Oh god lollll
It turned back to crude oil from which it came from;p
fomalhaut86 crude oil is actually quite thin and not like this...
The lower fractions of crude oil :)
fomalhaut86 yes :) cook it in the oven for brownies, or mix with small rocks for asphalt.
William Jenssen
Crude oil from where? Viet crud has to be pumped up using steam, it is almost solid. Nigerian crud looks like dark water.
Jame Gumb Norwegian crude oil🙂 and mostly all oil that lies beneath the sea.
I've been looking for THIS specific video for a whole month 🤣🤣🤣 now it's in my fav
This absolutely is the most scatological car video I have ever seen.
That's a good time to pull the pan.
Props to getting running! Definitely sounds like an old engine and a worn engine.
I love the suggestion of the dipstick flush to start with
A friend worked at the local Ford garage, called me in one day to look at an 03 Mondeo Auto. Had 75k on the clock, had not had an oil change since 5k service which was 8 years previous. Motor was seized, similar looking sludge in the sump. You were very wise to change it out.
Ive been changing my own oil for over ten years now and have never seen anything like this!
you've just explained cause and effect in 2 sentences lol
warning, NSFW if you're a mechanic
*NSFL
@@nanismeelasla
Not Safe For Life?
@@observingrogue7652 yes
What does nsfw mean?
@@nanismeelasla NICE!
I can’t stop watching this
This was a very satisfying video
Classic internet mechanics in the comments
The comment section is cancer lol everybody gives a damn what he does with his car
yea I think he should replace his alternator after doing this
But also some real mechanics not taking the oil pan off is for lunatics, just pure luck if all the tar came out. Image the oil pump filled with this gummy oil poor engine
@@kitecattestecke2303 the candy of choice for mechanics?
@Patrick Rapan it's for everyone, not just mechanics. You'll find if you do it how many people actually do it but everyone says they dont
2:40 my ass after a long night of spicy burritos and beer
LOOL
Doo Doo sludge
car diarrea
😂😂😂😂😂👍👍
😂
Brilliant video 👍🏻
I normally don't ever recommend engine flushes, but this is an extreme case. Unless you have the kind of tools on hand that would be required to remove the oil pan (like an engine hoist), I have to applaud the sheer ingenuity of what was done here.
Obviously, the guy doesn't have a professional engine rebuild shop in his backyard, so he did what he had to do with what he did had on hand. Bravo for thinking outside of the box sir!
I do have the kit to do it, but I'd need to source a gasket set for the engine, which itself would be a challenge, and the first thing to do was find out what I'd got - if it'd run like a bag of spanners, yes, I'd have had to pull it and rebuild.
That poor thing 😢
Im worried when im 50-100km late for an oil change...this one was late for years 😞
I will start changing my oil 500km before!!
I wonder how the coolant looks?
Surprisingly good! I should still change it though, really.
should change the trans and diff fluids as well
should probably just change the whole car, it would save all the shit you're getting on youtube lol good vid though..
@@mujjuman yeah well... i think that would be more expansive than the car itself
@@InitialDave After that many years, I'd change the hoses and coolant. I'd also change the transmission fluid or gearbox oil as well.
Having had a similar experience, I drained what oil I could get out, filled back up with flushing oil, ran the engine till hot, drained and repeated till the oil came out clean. If you don't have flushing oil use cheap oil and a can of engine flush. Flushing oil has a much higher % of detergent and is less viscous so gets into and cleans out all oil passage ways, plus it's safe to run your engine with for short periods so it can do it's work
The close resemblance to bodily functions is part of the fascination. Honestly, haven't heard of anything like this since broke up with that nurse. Seriously.
You could add an extra Quart of automatic transmission fluid that helps clear the oil, because transmission fluid has a lot of detergents in it.
g6qwerty so does bleach
@ray bee that stuff works good for desludging engines.
@@Channel0002 bleach is corrosive
Lesson of the video.
Spend 45.00 every 3 to 5 months on an oil change, instead of spending $7,000.00 or more on a new engine.
Cerberus it's 3700 for my engine
punker4Real labor on a motor job can be 20 hours at 90 per hour bud
@@destroyall24 Yes, but it depends on the car. In general it takes about 8-12 hours, with rare cases of it taking 15 hours for rare, very difficult cars. Private garages are usually cheaper as their upkeep is lower than larger garages. Doing it through a specialist or dealer obviously is more expensive, rates of 90 per hour...expect to make that 130-150 per hour in that case.
I do it twice a year on my 2017 Elantra Sport right now. Barely scraping 3,750 miles in 6ish months time. Change it to keep it happy, and makes routine changes a normal part. Literally the lifeblood of any engine.
Nowadays you can change it every couple years, and 20.000 km.
Ive never heard anyone changing oil at 3 months, unless you drive 10.000 km or more, in those 3 months..
I appreciate the tips I think you did everything just right
This video is very satisfying.
So this is how a car enema looks like...
Dexron ATF works great to soften and dissolve sludge. Try it straight without driving, just run stationary, drain and put engine oil-ATF 50/50 and drive 50 miles, change and repeat a few times, changing filter each time. Finally use 1 quart ATF with engine oil and run for 500 to 1000 miles. If it still runs, the engine will likely be OK for quite a while. I've saved a few engines that way, but too late is still too late.
0:36 HAHHAHHA that quick hand out of the way got me ...
It's alive!
If you have thick sludge like that, the last thing you'd want to do is add diesel to the sump and run the engine with the old oil in it. It will plug the oil galleys/ pump in a heartbeat and any bearings or sleeves that dried out won't be lubricated. Old methods aren't always the best. For example I recently rebuilt a 1970's Ford 400ci v8. Even after an oil change (the oil looked like new!) and a flush it still had a lot of noise that the oil pressure was down. Assuming it was just a bad oil pump we rebuilt the engine and found out the oil pump was fine, but the pickup tube, pickup screen, and bottom of the pan was full of sludge.
That's why the diesel is just used to clear it out. The engine doesn't get turned over until it has clean oil and a fresh filter, and those were changed again once I'd proven it ran.
It sounded Tappy. Doesn't take much to block the screen. I'd be taking the sump pan off five times . And I would also fill that engine to the top of the rocker cover with diesel. block off the dipstick. Rocker cover off clean the head out. After a bit of driving the clumps will break off and block the screen.
Hi Dave
If you need the repair manual for this car, do let me know
Car feels so happy now
Showroom guy, First oil change. As fresh as new car.
I do love these internet mechanics about all the ways they'd of done this different and clearly using delorians for time saving abilities with dodgy dave giving below trade price on parts.
I don’t feel so bad about letting my next change go a little overdue now lol
At 2 min and 30 sec you are experiencing my morning ritual.
🤣
In the mid 80s a guy had a 70s model ford, all he used was quaker state engine oil. We took off the oil fill cap, shined a light in and the engine oil looked like hardened tar build up filling up the valve pan.
as one of thoses older generation mechanics just wanted to tell you the diesel in the sump engine flush trick only works properly if you run the engine for five mins (without revving it of course as that would be not good!) then drain the hot diesel scum mix out!
I was referring to the practice of using a 50% or more diesel mixture into the oil and running the engine up with that in, which I feel is too aggressive. Just adding a smaller amount to give a 10-20% dilution and running at idle is little different to a generic bottled "engine flush", and in most cases should work well.
The diesel flush I do in the video is more a sluicing out than anything - I put a LOT more diesel in than you'd use for a normal flush, and it's after this has removed the majority of the gunk and I'd put fresh oil in to run the engine that the more usual "add some flushing agent and run at idle" kind of flush comes into play.
we use to run gunked up engines on diesel as it cleans all the oil galleries pump and hydraulic tappets this trick worked on rover k series engines especially as they always had hydraulic tappet problems as people never did regular oil changes back in the day?also did you put and oil in the bores before running the dry engine?
Yep, I squirted a bit of oil into each cylinder while checking the plugs before I started it.
2:40 when I'm on the poddy
Gave that starter a workout!!!
They are very rare cars now. I had a non-turbo MK1 model from new in 1998, for 6 years. A lovely little car. They seem to be non existent for sale on eBay now, but I'm sure there are some knocking about in people's garages around the country. I paid about £6-7,000 for mine.
I would take out the valve cover and oil pan off
Brian Gutierrez agreed
FarcryTheBrave seafoam cleans anything lol..... I'd change it every 500 miles about 2 or 3 times . Use thin oil too.
Chrisfix videos he shows how the product works but there is a treatment for the gas and oil and transmission is called BG cleaner I believe depending on the make and model can be hard 2000 Mitsubishi Eclipse the oil pan is easy to remove 99 Dodge Ram 1500 you have to raise the engine to remove it but instead of removing it we drop down the pan remove the rubber gasket take out any remaining seals debris well I'm trying to say even though if you could drop the pan and enough space to remove the gasket that's all you need I know they're sideway engines and or harder to get but still possible and time consuming
Some engines need to be pulled to get the pan off, the Ford 6.7 Powerstroke does need to be pulled to get the pan off.
I agree with you with the diesel they don't give you enough room I know that for a fact because I had the Ford F350 6.0 turbo diesel 2006 my brother had the 2001 7 3 replace that oil cooler about 4 time on the 6.0 at the end I bought the Bullet Proof Diesel oil cooler going from Arizona he didn't seem to really help it did freed up a lot of room but I never buy an aftermarket boots for the intercooler it just keeps on popping the way from Texas and bought some dealer ones and still have them here didn't use them
Next time u try something like this pull tge spark plugs if its a petrol engine and pour some seafoam or marvel down the holes and leave it soak just in case rings might have been siezed (also cleans out the combustion chamber nicely) and then put in new spark plugs, woulda made starting a lot easier
Never been scared before watching someone do a oil change till now .
Love your bassline
You should take off oil pan, clean the shlam and then flush with diesel
The motor may need to be pulled out of the car to get the pan off
You must have fed the car Taco bell
1:22.....frogs been at it in the sump !! 🤣🤣🤣👍🏼👍🏼👍🏼
Love how you change the filter on that..
I wonder how this kind of people that forget or denials simple commun items , how they actually clean up after they use the restroom or even if taking a bath is on their mind???😱
2:52 How i feel after drinking a few beers 😂
This is a fascinating video.
That car is so glad you honored and saved it and I hope it serves you or someone well and it looks like it's a great economy car and turbo when you need it wow.
Some day when our vehicles can run so clean they don't need a cat converter we might figure out that the oil rarely needs changing then. Perhaps that day is already possible but our auto and oil companies which some say are owned by the same people, are holding back on us to get more money out of us keeping us down....
Did u shout “its alive!!” When it finally turned over?😅😅😅
I would have, lol!
2:30 reminds me of going to the bathroom after going to Taco bell
Tomlantis 212 🤣🤣💩
Totally 👍
+Tomlantis 212 - You mean Taco Hell!
+Drew Benson - Hahahahahahahaha, that would work too :D
your comment reminds me of the other one that's exactly the same as yours and posted earlier
Bwahaha... love the Armus reference!
LOVE the season one next generation cut away!!
1:21 how my toilet looks like when I look at it after taco bell
Was it sitting outside in English weather for fourteen years?
A wonder it wasn't fill of rust holes everywhere. Even the paint looked ok considering.
Yes, I think what's mainly helped it is by not being driven, it's not been exposed to road salt and the like, though the paintwork isn't great, lots of bits of failing clearcoat and scratches/dents around the car.
I prefer Spanish weather for my cars.
Haha, tell me about it, suppose it could be worse though!
InitialDave Florida weather is best!
Antony Lopez heat isn't necessarily good for a car
The engine looked pretty clean.
Good job getting life back into the old girl.
omg it runs. i thought the engine would have been knackered hence lying there and secondly why the hell was it lying for 14 years!!!!!!!! people absolutely anger me sometimes lol
TH-cam Support and also this type cuore is a rare one to 16 valve turbo i never seen one b4 like this model the standard model cuores are here in the duch here loads but a turbo version are total rare here i seen one for sale and had a pretty large price tag that camealong
Cyberdyne Systems - you’re actually mad about this? LOL
2:30 when Taco Bell hits.
Now I may not necessarily be the smartest knife in the crayon box, but smokey here is taking a shit!
Really wanted to see part 2 of this.
th-cam.com/video/DzxuW9zMV7Q/w-d-xo.html
For all of you saying oh just drop the pan oh it's easy just drop it. Yeah stay at pepboys
Star trek Reference FTW!
Grateful Anubis sludge man
How very satisfying... *_sigh!_* Great little car, well bought.
After I retired the first time I decided to try selling new cars for awhile. We also sold used cars and were always looking for a good one to sell. The boss traded for a 3 or 4 yr old Crown Victoria, about 90,000 miles but fairly clean looking appearance. I pop the hood and WHOA! There was a coating of oily dirt over an inch thick on the dipstick! Nobody had checked the oil in a long time, so I pulled it out and OMG, no liquid oil at all, nothing but dried clumps of something on the dipstick!!!!! How is this thing even running? I told the service manager that it needed special attention, I wish I had been able to witness the work, but they got it cleaned out and by some miracle it ran just fine. Here's the kicker, it belonged to a independent oil producer, I don't think the oil had EVER been changed. Its important to take the valve covers off neglected engines, I was shown a number of neglected engines that the valve train was completely clogged up with dried up oil and the top end wasn't getting any oil flow at all.