BREAKING: GM is officially recalling the L87

[Scarey]

To recap for me, I’m a bit lost. All 21-24 6.2. the end of the run being engine build date 24165, about July 1, 2024. In this group you will be inspected for the p16 code. If code is present you get new motor and keep 0-20 oil. if no code you change to 0-40 oil and get power train extension to 10yr/150k. If outside this group 2020 or post 24166 and 2025 and you stay with 0-20 oil. Am I close?

 

[Antonm]

Come on, if 0-20 oil is recommended in your engine, and you pour 0-40 there, this will not lead to a waiver of the warranty?

No, it will absolutely not led to any waiver of or voiding of warranty at all, not even a little, no question, pure black and white.

This thread is 58 pages deep and it still baffles me that people don't understand that going to a 0W40 or 5W30 oil has literally no drawbacks of any kind aside from a minuscule reduction in fuel milage, but has drastic benefits to engine bearing life.

The 0W20 oil was recommended for one reason, and one reason only, and that's CAFE standards.

GM recommends 5W30 in the same engine in other parts of the world that the US EPA does not control, and even recommends 0W40 in the Corvette which has literally the exact same (not similar, the exact same) engine rotating assembly.

I seriously don't get what's so hard to understand and why people want to cling to 0W20 oil. Can 20 weight oil work, under ideal conditions sure, but everywhere an 0W20 oil will work an 0W40 will also work at least equally as well and in most cases better by providing a more shear stable oil film and being able to tolerate more fuel dilution. Its a no brainer, the benefits far outweigh the drawbacks of switching to an 0W40 oil even if this defect/ recall wasn't a thing.
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[Vladimir2306]

To recap for me, I’m a bit lost. All 21-24 6.2. the end of the run being engine build date 24165, about July 1, 2024. In this group you will be inspected for the p16 code. If code is present you get new motor and keep 0-20 oil. if no code you change to 0-40 oil and get power train extension to 10yr/150k. If outside this group 2020 or post 24166 and 2025 and you stay with 0-20 oil. Am I close?

Yes, it is

 

[Vladimir2306]

No, it will absolutely not led to any waiver of or voiding of warranty at all, not even a little, no question, pure black and white.

This thread is 58 pages deep and it still baffles me that people don't understand that going to a 0W40 or 5W30 oil has literally no drawbacks of any kind aside from a minuscule reduction in fuel milage, but has drastic benefits to engine bearing life.

The 0W20 oil was recommended for one reason, and one reason only, and that's CAFE standards.

GM recommends 5W30 in the same engine in other parts of the world that the US EPA does not control, and even recommends 0W40 in the Corvette which has literally the exact same (not similar, the exact same) engine rotating assembly.

I seriously don't get what's so hard to understand and why people want to cling to 0W20 oil. Can 20 weight oil work, under ideal conditions sure, but everywhere an 0W20 oil will work an 0W40 will also work at least equally as well and in most cases better by providing a more shear stable oil film and being able to tolerate more fuel dilution. Its a no brainer, the benefits far outweigh the drawbacks of switching to an 0W40 oil even if this defect/ recall wasn't a thing.
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Don't write nonsense, this engine has 0-20 oil, as well as on 6.2 4 generations, and outside the United States. And the cars drive perfectly on 0-20 oil

 

[Vladimir2306]

By the way, those who advise pouring oil 0-40, think about it. We have a massive pump, which is programmed to create a certain pressure depending on the operating conditions of the engine, you pour oil twice as thick. Now we think that the pump does not know about thicker oil, which means that the pump will pump half as much oil in the line. Do you really think that this is useful for the engine? If the dealer changes the 0-40 oil, they will set the firmware change to change the operation of the pump

 

[vcode]

Don't write nonsense, this engine has 0-20 oil, as well as on 6.2 4 generations, and outside the United States. And the cars drive perfectly on 0-20 oil

Not to mention the millions and millions of engines that have been running 0W20 for over a decade now without any issues. GM screwed up some vital engine parts and now some are failing. That is the problem, plain and simple. It's not the oil.

 

[vcode]

Regardless of the outcome here, how long before we see the Morgan and Morgan lawsuit ads on TV? GM trucks are ticking time bombs, blowing up engines and sending deadly shrapnel thru the engine compartment......

 

[Antonm]

By the way, those who advise pouring oil 0-40, think about it. We have a massive pump, which is programmed to create a certain pressure depending on the operating conditions of the engine, you pour oil twice as thick. Now we think that the pump does not know about thicker oil, which means that the pump will pump half as much oil in the line. Do you really think that this is useful for the engine? If the dealer changes the 0-40 oil, they will set the firmware change to change the operation of the pump

Again , not true. You seriously don't know what you're talking about in every post of yours I've ever seen

The oil pumps are positive displacement, meaning they pump a given volume per revolution regardless. Thick oil or thin oil, they pump the same volume per revolution.

And, again, just as another example of you showing that you don't know what your talking about, the only time the 40 weight oil would be twice as thick is when the engine is a full operating temperature.
So when cold the 0W20 oil is thicker than the 0W40 oil is at full operating temperature. So if 0W40 oil was an issue at full operating temperature, then the 0W20 oil would also be when cold.

Literally any condition , any climate, or any circumstance where an 0W20 oil would work , an 0W40 oil would also work at least equally as good, and in most cases better, with the only drawback being slight less fuel milage.
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[Antonm]

Not to mention the millions and millions of engines that have been running 0W20 for over a decade now without any issues. GM screwed up some vital engine parts and now some are failing. That is the problem, plain and simple. It's not the oil.

Under ideal conditions the thin oil can work (and give a slight fuel milage advantage).

Under anything other than idea conditions, the 0W40 oil is better in every way.

Here's an easy to understand analogy. Say you're varmint hunting and using a 22LR chambered rifle and that gets the job done (like the 0W20 oil gets the job done under ideal conditions) . What is the downside to using 223 Remington chambered rifle to hunt the same varmints with? The 223 Remington rifle will absolutely be as effective on the same varmints as the 22LR under ideal conditions, but also be able to get the job done in places and at distances the 22LR just can't,,, with the only disadvantage being slightly more felt recoil.

So if the owner is willing to accept the slight reduction is fuel milage, then there is absolutly no disadvantage , but plenty of advantages, to running a 0W40 oil compared to an 0W20 oil.
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[Scarey]

Regardless of the outcome here, how long before we see the Morgan and Morgan lawsuit ads on TV? GM trucks are ticking time bombs, blowing up engines and sending deadly shrapnel thru the engine compartment......

My concern with all this is if you are declared ok and get the 0-40 fill cap, that cap will be a scarlet letter. Even with warranty extension, resale value will suck. I’m so glad I paid $2,500 extra for the 6.2.
I also see the the Morgan and Morgan law group tv ads, “do you have a 0-40 fill cap, give us a call”.