quote:I think this is an excercise in futility for me since I'm not an expert. Improving on blends like Shaeffer's, Castrol Syntec Blend, Mobil Drive Clean Synthetic Blend HM, etc. is a waste of time. It's complex chemistry and each is formulated in it's own right. No witches' brews for me.
Originally posted by Alan: with part synthetic and part dino? If so,whats the ratio and brands you use?