ULTRA Two Stroke is a low ash ULTRA high performance two stroke engine oil for use in 2 stroke air cooled applications excluding marine. It provides better protection from piston and exhaust port deposits and exceptional anti-scuff protection. ULTRA Two Stroke is capable of mixing rations up to 100:1 in selected equipment capable of running at these ratios. The engine manufacturer’s recommendation regarding fuel/oil ratios should be strictly followed. LOW SMOKE FORMULATION.