Spectro Oils Golden 4 20w40 viscosity is a semi-synthetic specifically targeted towards Victory and Indian motorcycles to meet the viscosity requirements of these brands, including JASO MA2 for wet clutch compatibility.

Formulated to meet the demands of air and oil-cooled American V-Twin engines, Golden 4 semi-synthetic 20w40 is batch blended using Spectro’s G4 Technology. Offering a longer drain interval and the highest shear stability.

Spectro’s G4 Technology refers to its 100% Pure Group IV Platinum Full Synthetic. It’s crafted from modern Group IV PAO (polyalphaolefin) synthetic base stocks. These PAO molecules are assembled from the ground up to provide superior strength and endurance, no matter how hard or how long you punish them. The Group IV synthetic molecule is engineered from scratch to better resist being sheared in the gears, and to fight degrading oxidation due to high temperatures.