Originally Posted By: BobsArmory
Yea, the SL made me think twice about it if the little DI Turbo as well
No worries. It is due to zinc limitations in W30 oils. That formula is as current as it could be, and considering amount of zinc inside, protecting engine better.
But, API anyway is not stringent as MB 229.5, VW 502.00 and especially BMW LL-01.
Only reason why I am not using 0W30 in Tiguan is that 0W40 (same base stock) is much cheaper, so price difference does not justify it.
But used that oil always before 0W40 became available in Wal mart. IMO, best oil for turbo engines.