Quote:
Originally Posted by 2SS Capt
But 0W-40 ESP Formula wasn't around back then, obviously the GM Engineers have decided that is a much better oil than the older oils...
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I believe it -was- available when the first 2016's starting rolling off the line, though. Their oil requirements were the same then as they are now: 0W-40 on the track, 5W-30 on the street. The changed the wording of it and my theory is that it was due to them having to pay out under warranty because it wasn't "clear" to someone that they had to switch to 0W-40 on the track.