Thanks for the question! Here’s a quick rundown of how much Sea Foam Motor Treatment to use in different applications:

• For regular fuel system maintenance, add 1 ounce per GALLON.
• For cleaning, add 2 or more ounces per gallon to a low tank – THE MORE YOU ADD TO FUEL, THE BETTER IT CLEANS!
• For INJECTOR cleaning machines, use 50/50 mixed with gas.
• Use 100% Sea Foam for diesel injector cleaning machines or when priming diesel fuel filters.
• For 2-stroke pre-mix, add 2 ounces per gallon.
• For stabilizing fuel, add 1 ounce per gallon.

You can find that info on our Help Center page here: https://seafoamworks.com/help-center/how-to-use-sea-foam-in-fuel/

Let me know if you have any other questions – happy to help!

Thanks for the question! As long as the cap it on tight, you can store an opened can for many, many years (10+). It doesn’t have a shelf life.

Thanks for the question, David!

No, Sea Foam can’t damage seals and gaskets. It’s made with 100% safe petroleum ingredients that will actually help nourish and preserve seals. It’s safe to use in any kind of engine.

Thanks for the question! Yes, Sea Foam Motor Treatment is safe and effective in gas or diesel tractors. It’s made with 100% safe petroleum cleaning and lubricating ingredients that can’t harm parts or components. Lots of people use it in older/collector/antique engines. Just follow the directions on the can.

Thanks for the question, Bill! We get a few people asking about Sea Foam in furnaces like that each year. Yes, you can use Sea Foam in your diesel storage tank. Add 1 ounce of Sea Foam per gallon in the tank.