
Sea Foam is a fuel additive that can be used to clean fuel systems and engines. It is made from petroleum ingredients and is safe and effective for use in all types of gasoline or diesel fuels. Sea Foam can be added directly to the fuel tank to clean and lubricate the fuel system, including fuel injectors and carburetors. It helps remove harmful residues and deposits from fuel passageways, intake valves, pistons, and chamber areas. The amount of Sea Foam added to the fuel affects its cleaning power, with a higher concentration of Sea Foam resulting in better cleaning. However, there are mixed opinions on its effectiveness, with some users reporting visible results and others questioning its strength and ability to clean certain engine components.
| Characteristics | Values |
|---|---|
| Effectiveness | Sea Foam is effective in cleaning fuel pumps and filters, removing harmful residues and deposits from fuel passageways, intake valves, pistons, and chamber areas. |
| Usage | 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 storage or preventative maintenance, add at least 1 ounce of Sea Foam per gallon of fuel. |
| Safety | Sea Foam is made from petroleum ingredients and does not contain harsh detergents or abrasive chemicals that can harm the engine or fuel system components. It is safe to use in all types of gasoline or diesel fuels and fuel blends. |
| Results | The use of Sea Foam may result in the production of large white clouds of smoke or exhaust after starting the vehicle. This is due to the cleaning of carbon buildup. |
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What You'll Learn

Sea Foam is safe for gasoline or diesel fuel systems
Sea Foam is a petroleum-based fuel and oil additive that is safe and effective for use in gasoline and diesel engines. It does not contain harsh detergents or abrasive chemicals that can harm engines or fuel system components. Instead, it helps to clean and lubricate critical engine areas, including fuel injectors and carburetors, removing harmful residues and deposits from fuel passageways, intake valves, pistons, and chamber areas.
Sea Foam is designed to be added directly to the fuel tank, and the amount added depends on the type of engine and the desired level of cleaning. For regular maintenance, it is recommended to add one ounce of Sea Foam per gallon of fuel. For maximum cleaning, a full 16-ounce can of Sea Foam should be added to a low tank (2-3 gallons) and driven until almost empty before refuelling. This creates a high concentration of Sea Foam, allowing it to work faster and more effectively in cleaning fuel residues and deposits.
Sea Foam can be used in cars, trucks, and small engines, such as lawnmowers. For vehicles driven regularly, it is recommended to add Sea Foam to the fuel every 3,000 miles. For small engines, it should be added whenever the fuel is refilled. Additionally, Sea Foam can be used in engine equipment used regularly by adding one ounce of Sea Foam per gallon to a fresh tank of fuel every three months.
Sea Foam is also effective in preventing common engine problems caused by residue buildup in small engines, such as rough performance and hard starting. By adding a high concentration of Sea Foam to a low tank of fuel (a 1:2 ratio of Sea Foam to fuel) and letting it soak overnight, Sea Foam can clean residues and varnish, improving engine performance.
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Sea Foam cleans fuel residues and varnish
Sea Foam is a fuel and oil additive that cleans fuel residues and varnish from fuel systems. It is made from petroleum ingredients and is safe and effective when used in all types of gasoline or diesel fuels and fuel blends. It does not contain harsh detergent or abrasive chemicals that can harm your engine or fuel system components.
To clean residues and varnish from your fuel system, add a high concentration of Sea Foam to a low tank of fuel (a 1:2 ratio of Sea Foam to fuel). Then, run the engine for about ten minutes, shut it off, and let it soak overnight. Start it up the next day and run it for a while.
For regular fuel system maintenance, add at least 1 ounce of Sea Foam per gallon of fuel in the tank. For cars and trucks driven regularly, put 1 to 2 cans of Sea Foam in your fuel tank every 3,000 miles. For engine equipment used regularly, add 1 ounce of Sea Foam per gallon to a fresh tank fill every 3 months or sooner.
Sea Foam can also be used to clean and lubricate critical engine areas, such as fuel injectors and carburetors. It helps to remove harmful residues and deposits from fuel passageways, intake valves, pistons, and chamber areas. It also adds protective lubricity to fuel and fuel system parts, helping to protect against ethanol and water.
Overall, Sea Foam is a safe and effective way to clean fuel residues and varnish from fuel systems and critical engine areas. It helps to improve engine performance and efficiency and can help to prevent common engine problems.
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Sea Foam is made from petroleum ingredients
Sea Foam is a fuel additive that can be used to clean and stabilise fuel systems. It is made from petroleum ingredients and is safe to use with all types of gasoline or diesel fuels and fuel blends. It does not contain harsh detergents or abrasive chemicals that can harm your engine or fuel system components.
Sea Foam is made from highly refined petroleum ingredients that work to clean and lubricate. It is a blend of three petroleum cleaning and lubricating oils that work together as a cleaner, lubricant, and fuel stabilizer. It does not contain any harsh chemicals or cleaners and will not affect the octane rating in any way. Sea Foam is safe to use with confidence and is effective in cleaning fuel residues, varnish, and deposits.
Sea Foam can be used to clean diesel injector cleaning machines or when priming diesel fuel filters. It can also be added to gasoline or diesel fuel systems for cleaning. For maximum cleaning, it is recommended to add a full 16 oz can of Sea Foam to a low tank (2-3 gallons) and drive until almost empty before refuelling. This creates a high concentration of Sea Foam that works faster and better than adding the same amount to a full tank.
Sea Foam also contains a small amount of isopropyl alcohol, which is derived from petroleum and is known for its ability to effectively solubilize water in fuel. Isopropyl alcohol is also an excellent fuel residue cleaner and is not corrosive, making it a safe and effective petroleum-based ingredient. Overall, Sea Foam's petroleum ingredients make it a safe and effective choice for cleaning and maintaining fuel systems.
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Sea Foam can be used to stabilise fuel
Sea Foam is a petroleum-based fuel stabilizer and cleaner that can be used to stabilise stored fuel. It is a popular alternative to Sta-bil and other glycol-based stabilizers, which can be ineffective if the fuel is jostled, as the thin film they create breaks and does not reseal.
Sea Foam, on the other hand, mixes with the fuel, meaning that you can move your equipment without exposing the fuel to moisture. It is therefore a better fuel stabilizer for small engines like lawnmowers, snow blowers, and handheld trimmers, which tend to be disturbed more.
Sea Foam is also safe and effective when used in all types of gasoline or diesel fuels and fuel blends. It does not contain harsh detergent or abrasive chemicals that can harm your engine or fuel system components.
To stabilise fuel, add one ounce of Sea Foam per gallon of fuel in the tank.
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Sea Foam can be used to clean diesel injector cleaning machines
Sea Foam is a fuel and oil additive manufacturer that has been recommended for more than 80 years by mechanics and engine owners. Its products are made with safe ingredients that will not harm engines or equipment. Sea Foam's IC5 Fuel Injector Cleaner is specially formulated to clean fuel injectors and restore injector spray patterns for better engine performance.
To clean a diesel injector cleaning machine, a high concentration of Sea Foam is added to a low tank of fuel (a 1:2 ratio of Sea Foam to fuel). The machine is then run for about ten minutes, shut off, and left to soak overnight. The next day, the machine is started up again and run for a while.
Sea Foam can be used to prevent and overcome common engine problems caused by residue build-up in small engines, such as rough performance and hard starting. It is also safe to use in gasoline or diesel fuel systems and can be added to fuel every 3,000 miles for cars and trucks driven regularly. For small engines, it is recommended to add Sea Foam whenever you refuel.
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Frequently asked questions
Sea Foam is made from petroleum ingredients and is safe and effective when used in all types of gasoline or diesel fuels and fuel blends. It works through fuel injectors and carburetors to remove harmful residues and deposits from fuel passageways, intake valves, pistons, and chamber areas.
For a full tank of fuel, add at least 1 ounce of Sea Foam per gallon of fuel in the tank. For a low tank of fuel, add a whole 16 oz can of Sea Foam and then drive for at least 10-20 miles before refueling.
Yes, Sea Foam will clean your fuel pump and fuel lines. It will also clean your fuel filter by dissolving junk in the filter and allowing it to enter the injectors.










































