Lucas, primary chaincase oil. Mineral

Mineral. 1 quart (946cc) bottle. Lubricant for the primary chain of all late model Big Twin models where the primary is not equipped with an automatic oiler. - Designed to carry away more heat from the clutch plates and friction plates. This assures a longer more trouble-free clutch life - Expect a smooth clutch action, less slippage, longer chain and sprocket life and a much longer oil life - A heat transfer fluid for the clutch as well as a lubricant for the chain and sprockets

Fits: > 65-24 Big Twin (excluding pre-E1984 models still equipped with the stock primary chain oiler system)