Synthetic Ester SAE 40 2-Stroke and Rotary Engine Oil. A unique ashless synthetic blend for motocross, enduro, trials, classic and aviation 2T engines which require a tank mix oil. Also very suitable for motorcycle and aviation rotary motors. It is ideal for use in engines which are used seasonally or infrequently, as CLASSIC 2T PREMIX leaves a coating on all internal surfaces to prevent corrosion. Its ashless additive system and high ester synthetic content ensure clean burning and freedom from plug fouling from low speed to full throttle.