HOW TO USE SEA FOAM HIGH MILEAGE
BENEFITS
DIRECTIONS in fuel
DIRECTIONS in oil
treatment recommendations
SUMMARY
Sea Foam High Mileage is specially formulated for gas cars and trucks over 75,000 miles. Use High Mileage to help minimize long-term wear and prevent rough engine performance in higher mileage vehicles.
Sea Foam High Mileage is a blend of cleaning and lubricating petroleum ingredients that can be used SAFELY in all types of 2- & 4-stroke gas engines and all types of gasoline fuel and ethanol blends. High Mileage is ideally formulated to clean dirty fuel injectors and carb jets, intake valves, and chamber areas after years of harmful buildup. It helps resist the common problems that higher mileage vehicles face, like engine wear, oil burning, and rough performance.
Simply pour High Mileage in your fuel tank and oil crankcase to clean and lubricate critical engine areas and help keep your higher mileage vehicle on the road longer

HOW TO USE SEA FOAM
high mileage
RELATED QUESTIONS
I have a 1986 GMC van/bus conversion. It only has 130,000 original miles on it, but it is old. Will Sea Foam transmission and engine products be safe to use in older vehicles with automatic transmissions and carburetors?
Thanks for the question!
Yes, Sea Foam products are compatible with older, carbureted vehicles like your GMC. Both Trans Tune and Motor Treatment don’t contain harsh chemicals and are made with petroleum ingredients that can’t harm engine parts or components.
I’d recommend using Sea Foam High Mileage in the gas tank of your GMC. It’s a strong cleaner. For a cleaning dosage, wait until you have a low tank of fuel (1/8 tank or so), add 2 cans of High Mileage, and drive at least 20 miles (until almost empty) before you refuel. The high concentration works very well to clean fuel residues and deposits.
In your transmission, just follow the directions on the Trans Tune can.
Let me know if you have any other questions – happy to help!
Is Sea Foam Marine better for my small engines than the regular Sea Foam?
Thanks for the question! Marine PRO is safe and effective in your small engines and it’s similar to Sea Foam Motor Treatment in that it cleans fuel residues and varnish and stabilizes fuel. You could use either one.
If you want a formula that’s made for tougher fuel residues and varnish, give High Mileage a try in your small engines. That’s my favorite of the Sea Foam fuel treatments and what I use in just about everything. It stabilizes fuel as well.
I only used one can with my first treatment at 96k miles in my 2011 Camry today, Would it help to do a second treatment in a row with my next tank of gas? And possibly use two cans? I used high mileage.
Good question, Chelsea! We recommend adding Sea Foam to your gas tank every 3-5,000 miles, or once or twice a year. You can certainly add it more frequently, but doing one treatment in that time frame is plenty. High Mileage is a great choice as it’s a very good cleaner.
As far as how much High Mileage to use, here’s what I’d do: wait until the tank is low (1/4 -1/8 tank). Then, add the whole 16 oz can, and 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. By waiting until the tank is low, you can create a high cleaning concentration without having to use two cans.
How much Sea Foam do you add before the oil changes for a sticky lifter?
I’m trying to clean out my injectors. Can I add 3 cans to my gas tank?
Thanks for the question, Laura. Yes, you can add multiple cans of Sea Foam. I’d wait until you have a low tank (2-4 gallons) and add a can or two of Sea Foam (or Sea Foam High Mileage, which is a great cleaner.) Then, drive it until almost empty before refueling.
Using a high concentration is a great way to clean up fuel injectors. It wouldn’t hurt anything to add three cans, but it’s probably not necessary.
Jim D.TECH
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