Quote:
Originally Posted by FarmerFran
And for someone that has already had a blown brand new LT1 motor, I am not taking any chances
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One thing to note which I just learned myself...
2023 model year is the first where the owner's manual recommends oils that meets the dexosR specification for 6.2L. Same on the 2023 Vettes.
Unlike previous model years which stated dexos1 5W-30 is ok if dexos2 0W-40 is not available, the 2023 owner's manual notes, "If 0W-40 dexosR oil is not available,
SAE 5W-30 dexosR full synthetic engine oil may be used for street use." No longer is dexos1 mentioned.
So, again, purely to ensure full warranty compliance, I'd recommend using only dexosR on 2023+ SS / ZL1.