[waterman]

I voted oil as well.

If I may; Only Mobil 1 ESP and Castrol Edge make Dexos2 0W-40.

With that said, do the new 0W- oils address/reduce the previously known 0W- oil volatility issues in forced induction GDI motors such as excessive varnishing and coking?

If so, I am assuming that is possibly the reason that Chevy engineers have approved its use in dry sump LT4/LT1 for both road and track use.

Will that approval be extended to the wet sump versions of LT4/LT1?
(Honestly, I don't feel confident running 0W-40 on track but am interested in road use).

Mobil 1 15W-50 is not Dexos2 approved and yet is the only oil recommended for track use in ZL1 1LE, It is also OK'd for track use in LS/LT 1LE, SS 1LE and ZL1.
If according to the High Performance Supplement the oil is changed out after track use, may other high quality, full synthetic lubricants that are refined by companies that produce Dexos2 oils (i.e. Amalie/Motul) be substituted under warranty?

My apologies for the dissertation. Oil volatility in 0W- oils is my biggest concern.

Thanks for consideration.