My friend's failed while going down the highway with no warning signs, it had to be towed to the dealer. Are you going to tow it home, first, to change the oil and then to the dealer?
GM now saying to use 0w40 in 21-24 6.2L
- Thread starter That John dude
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My friend's failed while going down the highway with no warning signs, it had to be towed to the dealer. Are you going to tow it home, first, to change the oil and then to the dealer?
exactly
They won't test the oil, that doesn't happen. Its the showing the receipts that is the problem. They see something other than 0W-20 then they will be like warranty denied
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Sounds like the situation is very fluid and even GM doesn’t really have a good hold on what exactly is happening.
I've been using 40 grade in my 6.2 that's still under powertrain warranty today and I haven't kept a single receipt or bothered to track anything. They never uoa your oil. This is a problem that many of us bitogers have and I understand to a degree but I don't know why we tend to get this non existent oil Boogeyman in our heads that the dealership is going to do an oil analysis and cancel the warranty if the kv100 is beyond 9cst but none of them do. They rarely ask for receipts either. I bet more than three quarters the dealership staff has never even heard of the concept of doing an oil analysis.
All they're going to do is check the oil level to see if it shows something and if it's high mileage enough they might ask for you to pay them a little to pull the valve cover so they can check and they'll take a picture and send it to corporate. It doesn't have to be spotless for corporate to approve it. It can have some varnish as long as it's not too much and there's no sludge and they'll approve it but I doubt GM dealers are doing anything other than just checking the oil level and if the oil isn't black as tar on the stick.
I didn't think they would. I just thought the "I'll change it when a problem arises" suggestion was stupid.
Just keep all the receipts from when you bought the water thin crap. Or else go buy 5 quarts of it at Walmart before you take it in. But this is all really silly. Have you ever heard of anyone who had warranty work refused, because their oil was 10 weight too thick?
Yep, Hyundai.
Where I have to disagree is Gm can and have asked for receipts, and they are doing it more and more as their warranty claims are getting bigger and bigger. I have had multiple conversations with different service writers and managers at different Gm dealers. Its not like it used to be. GM is LOOKING to reduce warranty expenses.
Yeah I mean i just don't wanna take the chance that the dealer asks for receipts and all I have is 0w-40. I get what you're saying, I'd just rather have explicit backing from GM for the 0w-40.
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They were failing before, on 5W-30, and I assume there are examples failing on 0W-40 too. It's a QC/materials issues with the cam/lifters (the lifters seem to be a considerably more common culprit). That said, the GM issue(s) differ slightly from the FCA/Stellantis and Ford ones, as they have the additional issue of the AFM/DFM lifters collapsing.
Yep, the "tighter clearances" nonsense has been raised so many times, yet it takes only a few minutes to look up the bearing clearances and realize they are the same as they've been for decades.
I've always thought it was a silly notion that an engine was designed around an oil specification. Seriously, we are talking passenger cars and trucks that are supposedly built to withstand 300,000 miles of driving. It seems to me there was a design problem and GM has been quietly as possible eating that problem. Just like all the other manufacturers that have engine problems with one powerplant or another.
0w40 was already speced for 6.2 engines in camaros and corvettes, why wouldn't it be reasonable to use in the truck application? Maybe a bigger problem is allowing 87 octane in a performance based engine. (another topic/time perhaps) Will all the 6.2 engines fail with power loss? NO, but we have had many cases of them doing just that in the fleet. Combine that with poor maintenance (operators following the oil life monitor) low octane and severe duty and there are serious problems.
Our fleet vehicles that have had engine problems mostly happen well before 15,000 miles.
0w40 was already speced for 6.2 engines in camaros and corvettes, why wouldn't it be reasonable to use in the truck application? Maybe a bigger problem is allowing 87 octane in a performance based engine. (another topic/time perhaps) Will all the 6.2 engines fail with power loss? NO, but we have had many cases of them doing just that in the fleet. Combine that with poor maintenance (operators following the oil life monitor) low octane and severe duty and there are serious problems.
Our fleet vehicles that have had engine problems mostly happen well before 15,000 miles.
Yeah, and now they're recommending it... All the way up to 20W-50.
Here you go again being an absolute pain and also dead wrong.
Did I bruise your ego at some point and you just can't get enough of me?
It was a 166hp 2 liter Duratec HE GDI Ti-VCT, The comp ratio may be 12:1 not 12.5:1 I don't have the manual now.
I said the gross weight (with me in the vehicle) AWD and bigger engine. Cars don't drive themselves. I weigh 250lbs give or take.
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Now excuse me while I call the Subaru dealer for a service appointment before my new car shakes itself apart, I guess they don't know how to mount and balance cheap Firestone tires in Japan.
edited out mild jabs 1308hrs
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It is and they're not. NONE of this would be happening if not for all the CAFE nonsense. But people buy into it. Just like the whole Toyota "Computer Programmable Oil Pumps", that were set up for ONLY 0W-16 oil.
Run anything thicker and your oil pump shuts down, your engine seizes, and the warranty police come to your door to void your warranty.
Just keep a few receipts in the glove compartment. It's not like you're smuggling blow into the country from Peru.
Been running M1 FS in my Tacoma and previous 4 runners for years. Not a Chevy but never worried about warranty issues.
To the engine is question, this sounds like a manufacturing and or materials issue. Probably will get extended warranty or a class will be formed I believe.
To the engine is question, this sounds like a manufacturing and or materials issue. Probably will get extended warranty or a class will be formed I believe.
https://www.thedrive.com/news/gm-is...wn-6-2l-v8s-in-some-2021-2024-trucks-and-suvs
The ridicule and bans I got a decade ago saying thin oil was inappropriate was astonishing. This is why I basically withdrew nearly completely from all forums. Overzealous mods, bots, AI, Oligarchs and ZenForo have killed the net.
You and maybe 1/2 the guys on here in the unending thick/thin argument, LOL.
What is the early failure rate on the hundreds of thousands of LT1 architecture L86 in service in trucks since 2015?
Oil cap 0w20
Not ridiculing just asking. These numbers are usually held and kept close to the vest.
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