New 0W-40 oil and extended warranty talk

[Keewatin427]

 

[Keewatin427]

I’m just over 20,000 miles. I’m hoping my 6.2 passes muster and I get the extended warranty in the meantime. I’ve heard all the replacement wait time stories. Don’t want that smoke.

 

[TexOffroader]

I learned a couple of things from this but if the guy has lots of experience with this engine like he says he does, then why didn’t he reveal the L87 data between 0W-20 and 0W-40 in common scenarios? I do feel better about the big switch though.

 

[AXE]

Good video! I always thought it was a safe bet to run a higher viscosity for severe duty use. I would say in Arizona with temps around 110-115, a higher viscosity oil would be better.

Like @TexOffroader said, why the big jump though? Why not just 0W30? That still a bit of a head scratcher. To me, it just further indicates that we have bad bearings and cams and they are worn more than normal for the age of the vehicles. GM just buying some time, no real magic.

 

[cef2lion]

If you read the article below. Near the end it says if you pass the inspection you get the extended warranty. If you fail and get a replacement engine you don’t get the extended warranty with the replacement engine.
https://gmauthority.com/blog/2025/05/gm-6-2l-v8-l87-engine-recall-unrelated-to-valve-lifter-issues/

 

[KLA]

If you read the article below. Near the end it says if you pass the inspection you get the extended warranty. If you fail and get a replacement engine you don’t get the extended warranty with the replacement engine.
https://gmauthority.com/blog/2025/05/gm-6-2l-v8-l87-engine-recall-unrelated-to-valve-lifter-issues/

Yes. Exactly correct.

 

[JFuentes]

My question is: I just purchased a platinum GM extended warranty for my ZR2. If my motor passes this inspection, the 10 year/ 150,000 mile special warranty alligns right up with the extended warranty I just purchased (Besides the miles, ill hit the year cap way before the mileage). Assuming the special warranty only covers the motor, do I still keep my extended warranty I just purchased because it covers the whole truck, or get my money back and just use the special warranty while taking a risk on everything outside of the motor (suspension, electronics, etc.)?

 

[MrScottly]

My question is: I just purchased a platinum GM extended warranty for my ZR2. If my motor passes this inspection, the 10 year/ 150,000 mile special warranty alligns right up with the extended warranty I just purchased (Besides the miles, ill hit the year cap way before the mileage). Assuming the special warranty only covers the motor, do I still keep my extended warranty I just purchased because it covers the whole truck, or get my money back and just use the special warranty while taking a risk on everything outside of the motor (suspension, electronics, etc.)?

Responding as a contract administrator, I can attest that MOST failures that occur outside a normal factory warranty, during the 100K mile period, are not lubricated engine parts. Alternators, water pumps, fans/parts, transmissions, differentials, bearings, leaking struts, ABS components, ECMs and other modules, wiring issues, window motors....The list goes on. Engines are far down on that list.

 

[TexOffroader]

My question is: I just purchased a platinum GM extended warranty for my ZR2. If my motor passes this inspection, the 10 year/ 150,000 mile special warranty alligns right up with the extended warranty I just purchased (Besides the miles, ill hit the year cap way before the mileage). Assuming the special warranty only covers the motor, do I still keep my extended warranty I just purchased because it covers the whole truck, or get my money back and just use the special warranty while taking a risk on everything outside of the motor (suspension, electronics, etc.)?

First off, I’d recommend at least waiting until you get the results of your dealership inspection. After that, weigh the risk and do what makes you feel comfortable. I am personally keeping my extended warranty because some of these other components could easily cost more than what we paid for the warranty and when you throw in GM’s track record, enough said.

 

[laibal]

My question is: I just purchased a platinum GM extended warranty for my ZR2. If my motor passes this inspection, the 10 year/ 150,000 mile special warranty alligns right up with the extended warranty I just purchased (Besides the miles, ill hit the year cap way before the mileage). Assuming the special warranty only covers the motor, do I still keep my extended warranty I just purchased because it covers the whole truck, or get my money back and just use the special warranty while taking a risk on everything outside of the motor (suspension, electronics, etc.)?

I read that this warranty would be special coverage and that time frame being 10 year 150k from in service date of the vehicle. So the day it was delivered to the first owner is what would be the start of that coverage.

 

[JFuentes]

Responding as a contract administrator, I can attest that MOST failures that occur outside a normal factory warranty, during the 100K mile period, are not lubricated engine parts. Alternators, water pumps, fans/parts, transmissions, differentials, bearings, leaking struts, ABS components, ECMs and other modules, wiring issues, window motors....The list goes on. Engines are far down on that list.

That definitely makes sense. I also thought about if Knapp (or whoever they use for their extended warranty that I purchased) will give a partial refund due to not needing my motor covered under their plan (cause it would be covered under the special warranty if I pass the inspection). No need for my motor to be double covered.

 

[JFuentes]

I read that This warranty would be special coverage and that time frame being 10 year 150k from in service date of the vehicle. So the day it was delivered to the first owner is what would start that coverage.

That's correct. my Knapp Platinum warranty will expire in FEB 2032 or 87,000 miles (which I won't hit mileage wise). The special coverage (if passed inspection) will be AUG 2032.