Synthetic 2-Cycle Racing Oil (TCR) is a formulation of carefully selected synthetic basestocks and premium additives, providing excellent performance in both air cooled and water cooled two-cycle motors. Synthetic TCR is fortified with corrosion inhibitors to prevent rust from condensation at shut down and during off-season storage. The AMSOIL racing formulation is based on extensive research conducted both in laboratories and on the race track. SyntheticTCR provides superior lubrication, protection and performance for two-cycle motors in the most demanding applications. In extreme conditions where operating temperatures are high, two-cycle motors lose power and torque. The aluminum pistons expand from heat and cause an increase in friction. Synthetic 2-Cycle Racing Oil is a special blend of synthetic basestocks and additives that reduce friction, prevent metal-to-metal contact and provide maximum protection against piston scuffing.