Quote:
Originally Posted by Vigilante375
Go off of what your owners manual says. GM updated it in late 2018 early 2019 to 0w40.
Did they send it a letter telling owners that the new recommend oil was that? No.
5w30 is the recommend oil for 2017 - 2018 ZL1s and still is.
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I have a ‘17 and I have been running Mobil 1 ESP 0W40 (now labeled Supercar) oil since 2018. Yes, the owner’s manual states 5W30 oil for the ‘17 and ‘18s but there are no changes in the ‘19 and above ZL1 LT4 except for some hoses wrapped in plastic tubing instead tape and a supposedly updated oil pump.