Quote:
Originally Posted by kingrat
X2 except I use it in my vehicles also. Read a big write up on how royal purple and amsoil are the only 2 true pure synthetic oils
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Mobil 1, Royal Purple and AMS, were the only companies offering true synthetic oils, but then Castrol won a law suit, and were able to sell their Syntech as a full synthetic oil, so now all manufacturers seem to be marketing oils as being full synthetic that are actually hydrocarbon based.