Thunder Series Racing Oil -2 was engineered for moderate to upper horsepower range engine combinations that demand protection under high shear loads and high temperatures at extended periods of run time. TSR-2 has all the same features as the TSR-1, plus endurance based additives that give maximum protection under longer run periods. This formula resists fuel saturations caused by high boost from superchargers/turbo applications. TSR-2 formulation is the perfect blend for all supercharged/turbo and nitrous applications burning Methanol or racing fuel.
Note: TSR-2 was engineered as an endurance oil; therefore we do recommend this blend for everyday run use.