I have a buddy who's a very experienced mechanic. has owned his own shop for many years. works on race cars, exotic sports cars, street rods, daily drivers & everything in between. he's done drag racing, dirt cars, motorcycles & gocarts.he was telling me about this s10 shop truck he's got with a gazillion miles on it that was still running strong & for some reason it had always had 20w50 castrol run in it. know what he said the best kind of oil was?..................clean oil.
robert
