Ultimate in two-cycle performance, extreme cleanliness. Popular in racing and daily applications like motorcycles, marine, snowmobile racing, etc. Dyno proven for gains of 3-5% and more power over longer runs. High-temp stability prevents deposits on combustion chambers, exhaust ports, upper ring and piston crown. Suggested use at 50:1, but useful up to 100:1 depending on operating conditions. Chemistry in Two-Cycle Kart Oil and Two-Stroke Race Oil are identical, with different labels.