LUBRICANT COMPOSITION FOR SI-AL ALLOY SURFACES AND METHODS FOR USING

A lubricant composition including: (A) greater than 50 wt % of a base stock based on the total weight of the composition selected from the group consisting of that of a Group III base oil, a Group IV base oil, and a combination thereof; and (B) one or more additional components. The one or more additional components are selected from the group consisting of: (i) one or more high or medium base carboxylate detergents; (ii) one or more low base carboxylate detergents, wherein the low base carboxylate detergent is present at a level of 0.60 wt % or less based on the total weight of the composition; (iii) one or more low base carboxylate detergents and one or more aromatics-containing base stock(s); and (iv) one or more phenolic detergents.