Thanks for the question, Kevin. In addition to stabilizing fuel, Sea Foam cleans gum and varnish from the entire fuel system and prevents it from forming. Gum and varnish is often the cause of rough performance or hard starts. Sea Foam will clean it out, helping your generator start and run better.

Thanks for the question, Blaine! Here’s an overview. It depends why you’re using it:

• For preventative maintenance/fuel storage: 1 oz per gallon
• For fuel system cleaning/overcoming a fuel-related engine problem: 2 or more ounces per gallon. To maximize cleaning, add a full can (16 oz) to a low tank (2-3 gallons) and drive until almost empty before refueling.

Thanks for the question. No, Sea Foam does not have ethanol it it. It’s made with a blend of petroleum cleaning and lubricating ingredients. You can use it in any gas or diesel engine. Hope that helps and let me know if there’s anything else!

Thanks for the question, Shahid! Here’s the difference:

Sea Foam Motor Treatment:

• How to use it: pour it in your fuel tank or oil crankcase
• What you can use it in: any gas or diesel engine. It’s safe and effective in any kind of gas or diesel fuel, and any kind of motor oil.
• What it does: cleans fuel and oil residues to help your engine run cleaner, run better, and last longer

Sea Foam Spray:

• How to use it: apply it through a gas throttle body or carburetor
• What you can use it in: gas engines only. Particularly useful in gasoline direct injection engines. NOT for use in diesel.
• What it does: Sea Foam Spray is an aerosol version of Sea Foam Motor Treatment. Sea Foam Spray works through a gas engine’s upper air intake to dissolve harmful deposits and residue buildup from intake runners, intake valves, and combustion chamber areas. It’s especially helpful for cleaning intake valves in gasoline direct injection engines (GDI).

In short, both products will clean critical engine areas to help your engine run better and last longer.

Hey Stephen,

Good question! Sea Foam Motor Treatment will keep fuel fresh for up to two years. More specifically, it will preserve ignition vapors and prevent fuel gum and varnish from forming.

Note: Sea Foam won’t “restore” old fuel. Add it to fresh fuel before storage.