• Wait until you have about 1 gallon of gasoline left in the tank.
• Add a full 16 oz can of Sea Foam High Mileage.
• Start the engine and let it run for several minutes so the treated fuel reaches both carburetors.
• Shut it off and let it soak overnight.
• The next day, start the engine and ride normally to continue cleaning.

Thanks for the question, Ari. Yes, you can use High Mileage in a small engine. It works great to clean stubborn fuel residues and deposits. If you haven’t run a high cleaning concentration through your small engines before, I’d give that a try. Wait until the tanks are empty or almost empty, add a 1:2 ratio of High Mileage to gas, and run that through until empty. A ¼ tank total of the high concentration is plenty to clean. After that, you can add 1 oz of High Mileage per gallon of fuel to every tank to keep the engines running clean and prevent gum and varnish from forming while they’re not in use.

Thanks for the question. Yes, you can use High Mileage in the oil of a vehicle with 80,000 miles on it. It will do a good job cleaning up oil residues and deposits. Add it 100-300 miles before your next oil change. Add 1 oz of High Mileage per quart of oil (and do not exceed that ratio).

Hi Mark,

Thanks for the question!

Yes, you can use Sea Foam Motor Treatment in your 2004 Kia Spectra with the 2.0L engine. It’s good to use in both the fuel and the oil.

For the best fuel-system cleaning, I’d recommend waiting until the tank is low, about 1/4 tank or less, then add a full 16 oz can and drive at least 10–20 miles before refueling. The higher concentration works much better and faster to clean fuel gum, varnish, and other deposits.

Since your Kia is an older vehicle, you could also use High Mileage Sea Foam for some additional cleaning strength.

For the oil, use 1 oz of Sea Foam per quart of oil, added 100–300 miles before your next oil change.