Good question, John. There are two common reasons people use Sea Foam in a vehicle: to solve a problem, or as preventative maintenance. Sea Foam cleans fuel residues and deposits, which are often the cause of common engine problems (like rough idle, loss of power, loss of fuel efficiency, etc.).

In a newer vehicle, you can use Sea Foam as preventative maintenance to clean and prevent any fuel residues or deposits from forming. Adding a can every 3-5,000 miles will go a long ways to keep the fuel system clean and stay ahead of any problems. As a cleaner/preventative maintenance, you can start using Sea Foam whenever you’d like on a new vehicle.

You can also use it in your oil as preventative maintenance. Add 1 ounce of Sea Foam per quart of oil around 100-300 miles before you change it. That will reliquefy any oil residues or deposits and allow them to be drained away when you change your oil.

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

Thanks for the question, Joe. Yes, you can still add the entire bottle to a 15 gallon tank. The higher concentration will work well to clean and it’s safe to add that amount.

Good question, Valerie.

I’d use the High Mileage formula for your truck. It’s made to clean stubborn fuel residues, so it would be a great option for getting your truck running strong again. Here’s what I’d do: add two 16-ounce cans of High Mileage to the tank. Then, drive it as normal until it’s almost empty before refueling. You want to make it through as much of the treated fuel as possible. The high concentration will do a great job cleaning up any fuel residues or deposits that formed while it sat.

After that, add a can of Truck & SUV to a ¼ tank every 3,000 miles or so to keep the fuel system clean. You could also keep using High Mileage as well if you want.

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

Best,

Conner

Sea Foam

Good question, Roger. Yes, you can. All Sea Foam fuel treatment products are safe and effective in non-ethanol fuel.

Thanks for the question, David! Here’s what I’d do: wait until the tank is low (1/4 -1/8 tank), and add the whole 16 oz can. Then, drive for at least 10-20 miles before refueling. It’s safe to add a high concentration like that and it works very well for cleaning fuel residues and deposits.