Good question, John. If the fuel is already treated, you can go ahead and use it without adding more Sea Foam.

If you’ve got a snowblower that isn’t running well, you can add more Sea Foam to the fuel tank (up to a 1:2 ratio of Sea Foam to fuel) to create a high cleaning concentration. It will clean up any fuel residues that often cause problems like slow starting or rough performance.

Otherwise, 1 oz of Sea Foam per gallon of gas will be good for stabilizing fuel and preventing gum and varnish from forming in the fuel system.

Thanks for the kind words and glad it’s been useful!

If you suspect there is water in the tank, use an isopropyl product like Heet. Sea Foam will help control small amounts of moisture in fuel, but something like Heet is designed for larger amounts like you’re describing.

Sea Foam is safe and effective to mix with any fuel additive, so go ahead and add it as well!

Thanks for the question! Yes, any Sea Foam product that’s labeled for a gasoline engine is also safe for a turbo.

Sea Foam Spray is safe and effective in a turbo. We get asked about that a lot! Here’s a video with step by step instructions.

https://www.youtube.com/watch?v=IwU5sEKlpns

Thanks for the question!

I’d add a whole 16 ounce can to a half tank of fuel. That said, here’s my recommendation in general: wait until the tank is low (1/4 -1/8 tank), and add a whole 16 oz can of Sea Foam. Then, drive until almost empty before refueling. The high concentration of Sea Foam will work very well to clean critical engine areas. Rather than adding it to a full tank, it works better and faster to use a whole can in a low tank of fuel.

Thanks for the question, Raymond. Sea Foam does not have a lifespan – you can definitely still use a can that’s two or three years old!