quote:"In my opinion, paraffin-base oils work the best in the engines I build."
Originally posted by JonS: This guy in the link below says it is 87% synthetic as is Castrol syntec. http://www.hotboat.com/members/articles/2002-07/012.pdf
quote:Yes, but with the introduction of Mobil 1 TriSyn formula, Mobil stopped using mineral oil as the additive carrier. Hence, current formulations of Mobil 1 DO NOT have any mineral oil in them.
Originally posted by Steve S: No oil reguardless what basestock is 100% oil there are additives and the carrier oil.