There are different forms of moly. Moly can actually lead to engine corrosion. Other additives have ZDDP which can cause catalytic failure. Problem is you never know what kind of levels the additive has in it or what form. Also you don't know what other goo the stuff has which can adversely affect your Engine oil which has been carefully tested. I'm sure others here will tell you to use a gooe engine oil and do an analysis. It's really the only way. Not really an expert-just an opinion. Welcome to the board.