Quicksilver Rejuvenate 2-Stroke Marine Oil Recommended for use in air-cooled or liquid-cooled 2-cycle engines with oil injection systems or for premix. Initially developed for military applications that use varying qualities and types of fuel around the world. works immediately on removing existing carbon deposits from pistons, cylinder heads and fuel injectors. Results may be noticed within 2 to 10 engine hours Easier starting, smoother running and better acceleration. Prevents new performance-