Join Date: Mar 2008
Location: Alaska - 63North, 162West
No such thing as best. You only need to use an oil which is right for your application. I've run mainly Citgo/Mystik oils for over 10 years - at least 50 gallons of Sea and Snow through our machines without a hiccup. Castrol T2 has served well also. I don't think I'd want either of those in valved ported engines however. But, other than costing more money, it's hard to realize any benefit to using full synthetics in engines that don't require their use.
Formerly known as 63November, and before that as Golsovia.
Riding since 1983.
-Yamaha Enticer LTs
-99 Arctic Cat 550 Panther 14,000+ miles
-08 Ski-Doo 550 Backcountry
-340 eBay Edge from AK, and 10+ other states
-'11 AC T570 brand new...4000 miles