How much Sea Foam in a motorcycle gas tank? [SOLVED] Asked by Steven P. In Alabama How many ounces of Sea Foam per gallon should be used if I’m using it in a motorcycle?
Hi Steven. Supposing your motorcycle has a 6-gallon tank, I’d add a whole can when the tank is half full or less, then add fuel later. That way you’re increasing the cleaning concentration, then still have plenty of Sea Foam left in the tank when you add more fuel.