larrylu Posted July 30, 2012 Report Share Posted July 30, 2012 I've been trying to do my homework on oil brands but I've been finding a lot of conflicting studies that seem to suspiciously support one brand over all the others...but they all disagree. I see some of you use Royal Purple, some love Amsoil. I've been using Castrol (because of a study) only to learn that it's not really a man made synthetic and should probably be sold cheaper because of that. So now I'm looking for a new synthetic oil to put my faith in. I'd really like to make my decision based on some facts rather than emotion or here say. Any one have some advice? Sent from my iPhone using Tapatalk Quote Link to comment Share on other sites More sharing options...
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