
Sea Foam Motor Treatment is a fuel additive that can be used to clean and lubricate a vehicle's fuel system. It is designed to remove harmful residues and deposits from fuel injectors, carburetors, and other engine components, improving engine performance and longevity. The product is safe for use in gasoline and diesel engines, and can be added directly to the fuel tank or crankcase, depending on the specific cleaning needs. Sea Foam is available in various formulations, including regular and high mileage options, to cater to different levels of residue buildup. The concentration of Sea Foam added to the fuel can be adjusted to achieve the desired cleaning effect, with higher concentrations recommended for maximum cleaning power.
| Characteristics | Values |
|---|---|
| How much Sea Foam should be added to an 11.9-gallon fuel tank for cleaning? | For cleaning, add the entire 16 oz can when the tank is low (1/4-1/8 full) and then drive for 10-20 miles before refuelling. |
| How often should Sea Foam be used for cleaning? | It is recommended to use Sea Foam every 3,000-5,000 miles. |
| How does Sea Foam work? | Sea Foam works through fuel injectors and carburetors to remove harmful residues and deposits. |
| Can Sea Foam be used in gasoline or diesel fuel? | Yes, Sea Foam can be used in any blend of gasoline and diesel fuel. |
| Can Sea Foam be used in hybrid vehicles? | Yes, Sea Foam can be used in hybrid vehicles. |
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What You'll Learn

Sea Foam Motor Treatment can be used in any blend of gasoline and diesel fuel
Sea Foam Motor Treatment is a fuel and oil additive that can be used to clean and lubricate critical engine areas. It is made with 100% safe petroleum cleaning and lubricating ingredients and is free from harsh chemicals or detergents. Sea Foam is safe and effective when used in any blend of gasoline and diesel fuel, and it can be added to the fuel tank to clean and lubricate the entire fuel system. It works through fuel injectors and carburetors to remove harmful residues and deposits from fuel passageways, intake valves, pistons, and chamber areas.
Sea Foam is a popular choice for engine maintenance and cleaning, with many people using it to clean their fuel tanks and fuel systems. It can be used in a variety of engines, including cars, trucks, boats, tractors, and lawn mowers. The amount of Sea Foam to be added depends on the size of the fuel tank and the desired level of cleaning. For a deep clean, it is recommended to add a high concentration of Sea Foam to a low tank of fuel and then drive until the tank is almost empty before refuelling. This process can be repeated every 3,000-5,000 miles to maintain a clean fuel system.
For a regular car or truck that is driven frequently, it is recommended to add 1 to 2 cans of Sea Foam to the fuel tank every 3,000 miles. For a small engine or equipment that is used regularly, such as a lawn mower, it is suggested to add Sea Foam to the fuel tank every time it is refuelled or at least once per season. If the vehicle or equipment is not used regularly, Sea Foam can be added to every tank of fuel. Additionally, for engine storage, it is recommended to add 1 ounce of Sea Foam per gallon of fuel to prevent issues like gum and varnish buildup and to preserve ignition vapours.
Sea Foam Motor Treatment is a versatile and effective solution for cleaning and maintaining fuel systems in a variety of engines and equipment. It is safe to use in any blend of gasoline and diesel fuel, making it a convenient option for improving engine performance and longevity. By following the recommended usage guidelines, individuals can ensure their engines remain in optimal condition.
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Sea Foam works through fuel injectors and carburetors to remove harmful residues
Sea Foam is an effective cleaner for fuel systems, and it can be used in gasoline or diesel engines. It is a safe product to use, and the more Sea Foam you add to the fuel, the better the cleaning action.
To use Sea Foam to clean a fuel tank, it is recommended to add the product when the fuel tank is low, around a quarter to an eighth full. For an 11.9-gallon tank, this would be about a 16oz can of Sea Foam. The vehicle should then be driven for at least 10-20 miles before refuelling. This process can be repeated every 3,000-5,000 miles to maintain a clean fuel system.
For carburetor cleaning, Sea Foam Spray can be applied directly into the carburetor throat, where intake air mixes with gasoline before moving to the intake valves and combustion chamber. This delivers a high concentration of Sea Foam straight to the upper engine, providing a powerful cleaning action.
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Sea Foam can be used to clean a bad fuel tank
Sea Foam Motor Treatment can be used to clean a bad fuel tank. It is safe to use in any blend of gasoline and diesel fuel. It can also be used in hybrid vehicles. The more Sea Foam you add to the fuel, the better it cleans.
For a large fuel tank, add two cans of Sea Foam to a low tank of fuel (2-3 gallons), and drive until almost empty before refuelling. For a small engine, add a can of Sea Foam followed by a gallon of fresh fuel. Run the engine for 8 minutes to allow the Sea Foam to draw through the carburettor circuits. Then, shut off the engine and let it sit overnight or longer (2 to 3 days). After this, add another gallon of fresh gas and run the engine for 5 to 8 minutes. Take it for a short spin to create more upper engine heat and compression.
Alternatively, for a small engine, add a high concentration of Sea Foam Motor Treatment (up to a 2:1 ratio of gas to Sea Foam). You can also add 2 or more ounces of Sea Foam per gallon to a low amount of fuel. For a small engine, add up to a 1:2 ratio of Sea Foam to fuel to a low tank (as low as 8 oz for small engine equipment) and run until empty.
You can also use a mixture of Sea Foam Motor Treatment (or High Mileage) and fresh fuel at a ratio of 50/50. Make sure it's filled above the "contamination line". Periodically, move the fuel tank around to get the mixture moving. It is best if you can get a little heat inside the tank, so leave it outside in direct sunlight if you can. Sea Foam works better at higher temperatures.
Sea Foam works by removing harmful residues and deposits from the fuel pump, injectors, or carb jets, controlling moisture, and stabilising the fuel.
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Sea Foam can be used to stabilise fuel
Sea Foam Motor Treatment can be used in any blend of gasoline and diesel fuel. It works through fuel injectors and carburetors to remove harmful residues and build-up in the fuel system. Sea Foam can be added directly to the fuel tank or to the crankcase and diesel fuel filter. When added to the oil, Sea Foam will clean up sludge, quiet noisy lifters, and remove oil varnish. One can treats 16 quarts of oil, so it is recommended to add the treatment 500-1,000 miles before the next oil change and then add the rest after changing the oil.
Sea Foam can also be used to clean a bad fuel tank. A mixture of Sea Foam Motor Treatment (or High Mileage) and fresh fuel at a ratio of 50/50 can be poured into the tank and left for 24-48 hours. It is important to ensure that the mixture is filled above the "contamination line". It is also recommended to periodically move the fuel tank to get the mixture moving and to try to get some heat inside the tank, as Sea Foam works better at higher temperatures.
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Sea Foam can be used to clean and lubricate the fuel system
For a stronger clean, a 50/50 mixture of Sea Foam and fresh fuel can be used. This mixture should be poured into the tank and left for 24-48 hours, with the tank being moved periodically to get the mixture moving. Sea Foam works better at higher temperatures, so it is recommended to leave the tank in direct sunlight if possible.
Sea Foam can also be used to clean small engines by adding a high concentration of Sea Foam Motor Treatment (up to a 2:1 ratio of gas to Sea Foam) to a low tank of fuel and then driving until the tank is almost empty before refuelling. For maximum cleaning power, a full 16 oz can of Sea Foam can be added to a low tank of fuel (2-3 gallons) and then driven until almost empty.
Sea Foam works by removing harmful residues and deposits from fuel injectors and carburetors, improving fuel stability and engine performance. It can also be used to clean diesel fuel filters and de-ice diesel engines.
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Frequently asked questions
Yes, Sea Foam Motor Treatment can be used to clean your fuel tank. It works for both gasoline and diesel blends.
It is recommended to add 2 or more ounces of Sea Foam per gallon of fuel. The more Sea Foam you add, the better it cleans. For maximum cleaning, add a full 16 oz can of Sea Foam to a low tank (2-3 gallons) and drive until almost empty before refueling.
For cars and trucks that are driven regularly, it is recommended to add Sea Foam to the fuel every 3,000 miles. For boats, tractors, or other equipment, it is recommended to do it at least once per season.
Yes, for a large tank, add two cans of Sea Foam to a low tank of fuel (2-3 gallons), and drive until almost empty before refueling.
Yes, for small engines, add up to a 1:2 ratio of Sea Foam to fuel to a low tank (as low as 8 oz for small engine equipment) and run until empty.










































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