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, Robert. Did you put it in the gas tank, or oil crankcase?

In the gas tank, a full 16 oz can is just fine and in fact will work very well to clean the entire fuel system. A high concentration of Sea Foam in gas will work better and faster than a low concentration. I like to add a full 16 oz can to 1/8 tank of gas and run it until almost empty before refueling. Sea Foam Motor Treatment is made with 100% safe petroleum ingredients that can’t harm engine parts or components.

In the oil, do not exceed 1 oz of Sea Foam per quart of oil. If you added 16 oz of Sea Foam to a 5 quart oil system, you’ll want to change the oil.

Thanks for the question! Yes, you can absolutely use Sea Foam Motor Treatment in your automobile! It’s safe and effective in any gas engine. Just follow the instructions on the can.

Here’s a little more info on how to use it:

I like to wait until the tank is low (1/4 -1/8 tank), add the whole can, and then drive for at least 10-20 minutes before refueling. It’s safe to add a high concentration like that and it works very well for cleaning fuel residues and deposits.

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.

Hi Jacob,

Thanks for the question! Yes, Sea Foam Motor Treatment is safe and effective in any gas or diesel engine, including your two strokes.

You can use up to a 1:2 ratio of Sea Foam to fuel. Here’s what I’d do:

• Add the Sea Foam to a small amount of fuel (8-16 oz of fuel).
• Run the engine for a few minutes to draw the treated fuel through the system.
• Let it soak overnight.
• Run it again for a few minutes before storing it for winter.