Quote:
Originally Posted by thecrewdawg
I have a 2018 ZL1 M6. My son is a salesman at the dealership that I purchased the ZL1 at. He just told me that the service tech that I usually deal with informed him that GM has changed or "updated" the oil requirements for the ZL1 from 5W30 to 10W40. Has anyone heard of this?
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It's been 0w40 (15w50 at the track for ZLE) since before I bought my ZL1 1LE in 2019. Chevy isn't "reccomending" (sic) anything new/different on that front.