the cheap walmart oils and their bretheren discount oils barely meet the specs, the quality control is poor, they use the cheapest additives to achieve the results desired. They are NOT just as good as a quality name brand oil. Probably adequate for anything we would use on the highway, but that is a false statement. There is plenty of proof that synthetic is "slipperier" many gearbox manufacturers allow a 25% greater load if synthetic is used. You "believe" you are right, but that doesn't mean you are.
