Quote:
Originally Posted by lordtakuban
You should return the Royal Purple ASAP and buy some Redline Full synthetic oil. It's Ester based and not crappy oil with good marketing hype like Royal Purple. If you really want to go baller, get some Motul 300V. If you want more budget minded oil that is still really good, get Amsoil. Basically, just about anything is going to be better than Royal Purple. Good luck.
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Proof to back this claim? My brother-in-law is a diesel mechanic and he swears by it.