As oil temperature increases, viscosity decreases. The best way to combat this problem is a higher viscosity, thermally stable engine oil that can perform consistently at the elevated temperatures required when racing.
Semi-Synthetic 10W-40 Racing Oil
Fortified with extra ZINC for severe racing applications
Resists breakdown and contamination from exotic fuels such as nitro and methanol
Resists thinning out at high crank-case temperatures
Bolstered with Lucas Semi-Synthetic additive blend