Will Sea Foam clean old gasoline and restore its function? [SOLVED]

Thanks for the question, Paul!

No, unfortunately it won’t. It’s best to drain any old, degraded fuel from the tank.

If added to fresh fuel, Sea Foam will preserve its volatility and prevent it from degrading.

If you do have old fuel, it will reliquefy any varnish or residue that has formed. If you’ve got a vehicle or engine with old gasoline in it and you can’t drain all of it, add some Sea Foam and fresh fuel. A full 16oz can added to a gallon of fresh fuel is a good start. Run that through the engine and it will clean the entire fuel system.

Hope that helps and let us know if there’s anything else!