i use to be a die hard Yamalube fan after my second rebuild we noticed that this oil is a little to thick and it gummed up my power valves so i started running castor 927 and now things feel much more cleaner. 2002 Yz 250 40:1
Competition Two Stroke Oil
Developed to meet the requirements of competition Motocross and Snowcross. Used exclusively by the two stroke Yamaha Factory Race Team riders.
A special base stock protects from wear and breakdown, reduces friction and allows for maximum horsepower.
Special, synthetic additives reduce carbon and deposit build-up on pistons, rings and exhaust ports, for maximum horsepower and minimum wear.