I've been reading a lot of threads around here and got curious. I have come to the conclusion that Lucas Oil additive is no more than thick "oil" that has very few benefits and MMO is a thin "oil" that is a light "detergent". So what would happen if you took a 5qt oil change (4, 6, or 8 cylinder engine) and used 1qt of Lucas, 1qt of MMO and 3qts of an oil brand of your choosing (let's say 5w-30) and a filter of your choosing? I'm thinking you'd get an unhappy engine and a mess, what are your thoughts? I would never do something like this, but my mind wonders sometimes and this popped into my head....