Mobil1 paid GM to get their oil in corvettes from factory. The oil is decent but it did not protect C6 and other models from having lifter problems at around 100k miles.
GM uses parts made in Mexico, China Canada etc in all GM products including the corvette. A company that cannot make a reliable car and left 1950's leaf spring technology in their flagship sports 2 seater. When GM went bankrup and bailed out their executives made off with millions. Castrol EDGE has the edge over Mobil 1 and Ive used EDGE 5w40 to make my sewing machine LS2 much more quieter.
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