GOODYEAR OPTIMAL SYN 5W-40 is a fuel saving and fully-synthetic motor oil containing Ester and PAO, designed for racing cars. Its special formulation enables high performance under heavy-duty operating conditions. The advanced motor oil keeps the engine clean from dirt, sludge, and deposits. The low viscosity and smooth fluidity make for a perfect cold start, fast response, and additional power from the engine. It also provides thermal and oxidation stability, reduces combustion deposits, and enables the engine to give a higher power output.