BrendanC
$100 site donor 2024
personally wouldn’t worry about idle hours. we have these engines with thousands of idle hours without an issue.
New vehicle has 5 engine idle hours
- Thread starter QwikKota
- Start date
Should see some of our fleet vehicles... One of the trucks I recently used is a 2022 F150 with just under 5000 hours of idling time... (There are work reasons for this idling time - not just wasting gas...)
Wouldn't sweat 5 hours at delivery at all!
Wouldn't sweat 5 hours at delivery at all!
OVERKILL
$100 Site Donor 2021
Ahhh, the old "lifetime warranty". Well, being a 2015, that's a pretty good idea, since that's still within the era prone to lifter failure.
OVERKILL
$100 Site Donor 2021
Not always, but it is often the case, using a better base oil blend than most 5W-20's.
It was $2400 and easily paid for itself after failures of water pump, fuel pump and a $1300 power side folding mirror with auto-dimming. They have fixed other items as well. Too bad no longer available. No doubt they were losing money on them. Mine has a tick at startup but goes away when it warms up. 99% sure it's the broken exhaust manifold stud I found. That plus another side mirror is not folding in via switch and other things will get repaired in August.
ETA: this is a factory Chrysler MaxCare warranty. Not a gimmick lifetime warranty where the dealer requires you to come in for every little maintenance line item to stay in compliance. I can do my own service.
OVERKILL
$100 Site Donor 2021
Yes, that sounds like a manifold, they are notorious for it, every one of ours has had them done.
My last truck had almost 8 hrs idling. They are often left idling at the factory as they are moved from validation and then staged for shipping. Then again they are started and left running before loading and unloading. I have been told they leave them running sometimes to assure the battery is charged.
Please explain how 0w20 is stouter than 5w20 and which brand?
4wd
$50 site donor 2026
I think in the next few years you're going to start seeing a lot of manufacturers rolling back on all of these factory water thin oil recommendations. GM has already done it, because they are experiencing an unusually high failure rate with their 6.2L, V8. They've gone from an original factory spec of 0W-20, to a 0W-40.
They're certainly not doing this because 0W-20 is a more, "stout oil". They're doing it because all of these water thin oils lack the necessary film strength to provide proper protection under high temperature / high load conditions that many of these vehicles operate in.
This whole water thin oil bandwagon has come about because of government CAFE mileage standards being shoved down these manufacturers throats. Now that this is starting to cost the manufacturers money, instead of the customers, because of in warranty failure rates, they're going to do something about it.
Losing money on CAFE credits is far cheaper than multi billion dollar in warranty engine replacements.
They're certainly not doing this because 0W-20 is a more, "stout oil". They're doing it because all of these water thin oils lack the necessary film strength to provide proper protection under high temperature / high load conditions that many of these vehicles operate in.
This whole water thin oil bandwagon has come about because of government CAFE mileage standards being shoved down these manufacturers throats. Now that this is starting to cost the manufacturers money, instead of the customers, because of in warranty failure rates, they're going to do something about it.
Losing money on CAFE credits is far cheaper than multi billion dollar in warranty engine replacements.
I agree it's too thin for a V8 but do not see anything in the 2026 owner's manual about alternate oil weights. The manual for our Yukon also has specifications for the 6.2L. Was this a TSB that was released?
Yes. This is what I came up with... This guy can be a bit irritating, so make of his comments what you will.
I don't think this video violates any forum rules.
https://www.google.com/search?q=GM+...j33i160l5.17262j0j15&sourceid=chrome&ie=UTF-8
- Joined
- Jul 10, 2026
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Can you explain why that would be good for break in? I’ve never heard that take before…
- Joined
- Jul 10, 2026
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Can’t wait to hear this! Both being a 20 grade there is essentially no meaningful difference in operating temp protection, only cold start.
And 5w20 can have considerably lower evaporative loss.
- Joined
- Jul 10, 2026
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Depending on the base oil and modifiers used yes - so it depends largely on brand and formulation not just the 5w20 label…
I watched my Z06 built. I estimate it probably had a good bit of idle time before it left the plant. Idling in the leak-test booth. Idling here, idling there, idling at the test track (they drive it over a ton of bumps and stuff to make sure nothing creaks or squeaks out of spec bad), then idling on the truck, idling on the lot, idling in the service area while waiting to get PDI'ed, not to mention a few test drives and the sales rep will always sit in the vehicle with the client while they try out the NAV and all that nonsense, maybe for a half hour if they're really into it, etc. I personally would think absolutely zero about 5 idle hours on a new vehicle with 50mi cumulative, and I'm OCD as hell.
I know why they are doing it, just wondering if it was official. Looks like it was.
"The updated oil spec for recalled units of the L87 engine was formally announced to dealers through GM service bulletins 25-NA-339, N252494000-10, and N252494003-02."
https://gmauthority.com/blog/2026/02/gm-dealers-switching-6-2l-v8-l87-0w-40-engine-oil-formula
It means engine on, vehicle in Park, based on my CVPI's metering habits.