Mobil-1 10-30, I spoke to the M-1 engineers regarding the Zinc thing and the "wear issues" They tell me that M-1 is fully compatible with the LT5 engine and the additive package will fully protect just as it did when it became factory fill in 92.
Again - this become a personnal thing to each car owner, his beliefs, what they read and who they trust!!!
Don Yoakem
91-#267 Dak Red Met.
