Silkolene Pro R 0W-20 Fully Synthetic Racing Engine Oil 4LAn entirely new concept in competition lubrication. Racing engines lose power and waste fuel energy due to oil drag and friction. This maximum power 0W 20 is a unique low viscosity synthetic which cuts oil drag yet maintains a tough low wear film on highly stressed components. Specially researched friction modifier chemistry relies upon electrostatic adhesion to attack friction at crucial points in valve and power train systems two sources of hidden