Maximas Maxum4 Synthetic Blend is a blend of ester-based synthetic and petroleum base stocks featuring advanced technology. This special high temperature formula protects critical engine components, reduces wear, friction, temperature, oil consumption and extends drain intervals. The use of new anti-shear additives assures viscosity stability for motorcycle 4-cycle engines with integrated transmissions. This formula also has extra anti-scuff additives to handle extreme loads and peak temperatures.