Oil Consumption

[nickschramm]

I’m not sure if this was previously discussed in here or not. I have a 22 Zr2, bought new in March of 23’. I wanna start this off with saying I love everything about the truck. Although it eats through oil. Every service has been done through my local GM dealer. The first time I got the low oil light, I thought maybe they didn’t fill it up enough. So I made them aware of the issue, and topped it off. Then it happened again. I started an oil consumption test, nothing came of it. Then it happened again, did the same thing. It was low, but not low enough for GM to do anything. Besides another consumption test, which I did. Mind you to do a consumption test, you have to get a fresh oil change, & come back every 500 miles for them to check. More or less a pain in the a**. This has been a back and forth issue since purchasing the truck, this past time it was around 4 quarts low. (The stick was dry when I got the low oil light). I am about at 25,000 miles. Bumper to bumper is over in about 10 thousand. & I’m pretty sure it has power train until 50 something thousand? Starting to think about trading for a Duramax HD of some sort. Just was curious if this has happened to anyone else & what their solution was. Sorry for the long read!

 

[laibal]

GM's V8 oil consumption spec has been 1 qt in 2K miles is normal for some time. For them to do anything in warranty you'll need to have the pain of a test done. I came from an 09 that would drink 1qt in 750 miles. It ended up eating the cam and lifters, When I rebuilt it the oil rings on 6/8 pistons were totally stuck and carboned up.

Fingers crossed the test is beneficial for you!

 

[AXE]

I've determined mine uses about 1/2 quart per 3k thousand miles. At one time I thought it was 1 quart, but I've captured the oil at the drain and measured it to be sure. Also, my dipstick doesn't read right or consistently. I park right next to my wife's 6.2L Tahoe and hers is spot on, but mine never seems to look full right after a change.

Service Advisor I've known for 27 years said that the new 6.2L motors would be in spec at 1 quart per 2 k miles. It used to be 1 quart per 3k.

If I was you, I'd change my oil earlier and don't worry about adding. If your doing 6-7k intervals following the DIC, I'd assume adding 2 quarts might be right.

I drive mine harder than some, so I expect a little blow by to be normal. If my wife drove it, probably be the same as her rig.

 

[Busa Dave]

I guess I have been lucky. Have had many diesels from the big 3 and several 6.2 engines from trucks, Tahoe, a very modified ZO6 even my 2024 Colorado Bison that never used any oil knock on wood! Your situation would just drive me crazy as OCD as I am about my vehicles! It is just completely unacceptable to me that GM or even the other manufacturers allow excessive oil consumption. It is nothing short of a get out of jail free card for them to allow flawed products to be deemed "normal"!

 

[scubatech]

I agree with you Busa Dave. I've never added oil to any of my vehicles. I change it at 3K, but even my F-150 with the 5.0, from 2018, when Ford first used a spray on coating. 2018 was supposed to be the worst V8 in the F-150 because of this. Hell, the Japanese motorcycles have been using this method for quite a while and they rev up to 9-10K. These engines seem to really last a long time. Maybe I have been lucky, but I believe a lot of this is internet generated BS. Modern engines should not use oil in my opinion.