How much Sea Foam is in a gallon of gas?
Matthew Barrera
Updated on June 09, 2026
When stabilizing fuel for storage, use 1 (one) ounce per gallon of fuel. Don't worry if you exceed these amounts: Sea Foam only contains petroleum-based cleaning and lubricating ingredients that CAN'T HARM your engine or fuel system components.
How much Sea Foam do I need for 20 gallons?
Our MAINTENANCE Recommendation:Sea Foam's maintenance recommendation for all fuel types is 1 oz per gallon poured into your tank. One pint treats up to 16 gallons. One gallon treats up to 128 gallons.