Red Line 40605 2-Stroke Race Oil, 1 Gallon, 1 Pack Suggested use at 50:1, but useful up to 100:1 depending on operating conditions High-temp stability prevents deposits on combustion chambers, exhaust ports, upper ring, and piston crown Dyno proven for gains of 3-5 percent and more power over longer runs Popular in racing and daily applications like motorcycles, marine, snowmobile racing, etc. Ultimate in two-cycle performance, extreme cleanliness