Brand: Red Line Synthetic Oil
Red Line Synthetic V-Twin Primary Case Oil was formulated specifically for use in the primary drive case on 1984 and newer V-Twin American motorcycles. Red Line started with their excellent MTL gear oil and tuned the slipperiness for smooth wet-clutch operation.
The fully synthetic formula withstands very high temperatures, protecting the clutch from premature wear and glazing. Classed as a GL-4 70W80 gear oil.
Not for belt-type primary drives.