Just so everyone knows, Corvette, Porsche, and Vipers all have Mobil 1 as the initial fill from the factory. The "don't use
synthetic until the engine is broken in" is an old myth. Many other eurpoean cars, Mercedes included use Mobil 1 as IF. Most builders have no clue about lubrication. Not trying to be cute, but have 35+ years in the field of lubrication. Mobil 1 is the best there is. However, the reduction of ZDDP is of some concern, but that is industry wide. The motorcycle version has more ZDDP.