How much Sea Foam to clean fuel system [SOLVED]

My car has 13.2 gallons of fuel. Do I add a whole can of Sea Foam to clean the fuel system? Or is there a certain amount of Sea Foam I can only pour into the fuel tank?

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Jim D.
Jim D.
1 year ago

Good question, Karwin.

The quick answer is to add a full can! Sea Foam is made with 100% safe and effective petroleum cleaning ingredients, so it can’t harm anything. A higher concentration of Sea Foam works fast and very well to clean.

Here’s what I’d do: wait until you have a low tank of fuel (1/4 or 1/8 tank or so), and then add an entire can of Sea Foam Motor Treatment to the fuel tank. Drive until almost empty before refueling. That allows the high concentration of Sea Foam to work through the fuel system and do a great job cleaning. It’s one of the best ways to get the most out of a can of Sea Foam!

Hope that helps!