Bob, I have two quick questions regarding Schaeffers Oil. Dunno if this has been asked before,but here it goes. Firstly, is there a reason why Schaeffers doesnt sell a full synthetic engine oil ?. Is it related to keeping the costs more reasonable for the customer ?, or is there a quality about conventional oil that is desireable in the mix of a blended oil which can't be achieved by a fully synthetic oil ?. Secondly, how do you feel about using Schaeffers synthetic blend in racing conditions ?. Does the synthetic blend hold up well under racing conditions or is more of a daily driven street oil ?. I see a reference to racing use on the website but I haven't read much on it. ] Any info you can provide would be great. thanks.