
Sea Foam is a leading fuel and oil additive manufacturer. Its products are formulated to clean fuel injectors and restore injector spray patterns for better engine performance. Sea Foam can be used in multiple ways: poured into the crankcase to remove deposits, poured into the gas tank as a fuel injector cleaner, or sucked into a vacuum line as an upper engine or top engine cleaner. To clean fuel injectors, Sea Foam can be poured into the fuel tank, with the amount depending on the size of the tank and the degree of cleaning required.
How to use Sea Foam for fuel injectors
| Characteristics | Values |
|---|---|
| How much Sea Foam to add | For cleaning, add 2 or more ounces per gallon to a low tank. For injector cleaning machines, use a 50/50 mix with gas. For diesel injector cleaning machines or priming diesel fuel filters, use 100% Sea Foam. For 2-stroke pre-mix, add 2 ounces per gallon. For stabilizing fuel, add 1 ounce per gallon. 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. |
| Where to add Sea Foam | Pour Sea Foam into your fuel tank. |
| Frequency of use | For cars and trucks driven regularly, add to fuel every 3,000 miles. For small engines, add whenever you refuel. For engine equipment used regularly, add Sea Foam to a fresh tank fill every 3 months or sooner. For all other engines and fuel tanks not used regularly, add Sea Foam to every tank of fuel. |
| Other uses | Sea Foam can also be used to clean crankcase deposits, sucked into a vacuum line as an upper engine or top engine cleaner, or added to your oil to dissolve buildup and deposits. |
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What You'll Learn

Sea Foam IC5 Fuel Injector Cleaner
To use Sea Foam IC5 Fuel Injector Cleaner, simply pour a full bottle into your fuel tank. One bottle treats up to 25 gallons or 95 litres of fuel. For maximum cleaning power, add the full bottle to a low tank (2-3 gallons) and drive until almost empty before refuelling. You can also add Sea Foam IC5 to every tank of fuel to maintain clean engine performance and prevent issues such as hard starts, rough idling, and engine hesitations.
Sea Foam IC5 is a trusted brand with a long history, dating back to 1942, of providing safe and effective products for vehicle and outdoor enthusiasts, mechanics, and engine owners. The company specializes in creating fuel and oil additives that are simple to use and safe for engines and equipment.
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How much Sea Foam to add to the fuel tank
Sea Foam is a fuel and oil additive that can be used to clean and lubricate your entire fuel system. It is safe and effective to use in all types of gasoline or diesel fuels and fuel blends. The amount of Sea Foam you add to your fuel tank depends on several factors, including the type of engine, the purpose of use, and the frequency of use.
For cars and trucks driven regularly, it is recommended to add Sea Foam to your fuel every 3,000 miles or every 3 months. For a standard cleaning, add 2 or more ounces of Sea Foam per gallon of fuel to a low tank (1/4 - 1/8 tank). The more Sea Foam you add to the fuel, the better it cleans. For maximum cleaning, add a full 16-ounce can of Sea Foam to a low tank (2-3 gallons) and drive until almost empty before refueling.
If you are using Sea Foam for preventative maintenance or fuel storage, add 1 ounce of Sea Foam per gallon of fuel. This will help stabilize the fuel and protect it from degradation while it sits in the tank. Sea Foam can also be used to preserve ignition vapors and prevent the formation of gum and varnish in the fuel system.
For small engines, such as lawn mowers, add Sea Foam whenever you refuel. For engine equipment that is used regularly, add Sea Foam to a fresh tank fill every 3 months or sooner. If you are parking your car for an extended period, add 1 ounce of Sea Foam to the tank to protect the fuel.
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Sea Foam Motor Treatment
To use Sea Foam Motor Treatment for fuel injectors, simply pour it into your fuel tank. The amount of Sea Foam to add will depend on the size of your fuel tank and the concentration of Sea Foam you want to achieve. For a stronger cleaning effect, use a higher concentration of Sea Foam. For example, for a deep clean, add a full 16 oz can of Sea Foam to a low tank (2-3 gallons) and drive until almost empty before refuelling.
Sea Foam can also be used in injector cleaning machines, where a 50/50 mix with gas is recommended. For diesel injector cleaning machines or when priming diesel fuel filters, use 100% Sea Foam. If you are going to park your car for a while, adding 1 oz of Sea Foam to the tank can help protect the fuel.
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Using Sea Foam in injector cleaning machines
Sea Foam is a fuel and oil additive that can be used to clean and lubricate your entire fuel system. It is designed to work through fuel injectors and carburetors to remove harmful residues and deposits from fuel passageways, intake valves, pistons, and chamber areas. This helps to improve engine performance and power.
When using Sea Foam in injector cleaning machines, it is recommended to use a 50/50 mix of Sea Foam and gas. For diesel injector cleaning machines or when priming diesel fuel filters, you can use 100% Sea Foam. It is safe to use in all types of gasoline or diesel fuels and fuel blends.
To achieve 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 allows the high concentration of Sea Foam to effectively clean fuel residues and deposits. For small engines, Sea Foam can be added whenever you refuel.
It is also important to note that Sea Foam can be used to stabilize fuel. Adding 1 ounce of Sea Foam per gallon of fuel will help to prevent fuel degradation and keep your engine running smoothly. This is especially beneficial for cars that are not driven frequently.
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Other products for cleaning fuel injectors
There are several products available for cleaning fuel injectors, with some of the best-selling options listed below:
- STP® Super Concentrated Fuel Injector Cleaner: This product contains concentrated detergents that help dissolve and remove harmful carbon, gum, and varnish deposits on fuel injectors. It is safe for any gasoline engine and compatible with cap-less gas systems.
- STA-BIL Marine Tune-Up Fuel Treatment: This treatment cleans carburetors and injectors, fixes rough-running engines, and eliminates water. It treats up to 20 gallons and comes in an 8 oz bottle.
- Royal Purple Max Atomizer Fuel Injector Cleaner: This is a 6 fl. oz fuel injector cleaner.
- Red Line 60103 SI-1 Complete Fuel System Cleaner: This product cleans and prevents corrosion in fuel systems, including injectors, carburetors, valves, and combustion chamber deposits. It comes in a 15 oz bottle.
- OXICAT- Oxygen Sensor & Catalytic Converter Cleaner: This is a pack of two for preventive maintenance.
- Hot Shot's Secret Gasoline Extreme: This is a 12 oz concentrated fuel system cleaner and fuel additive for gasoline engines. It increases MPG and restores engine performance.
Using a fuel injector cleaner can help prevent mechanical issues and improve engine performance. It can also help keep the air cleaner by reducing the release of pollutants into the atmosphere.
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Frequently asked questions
Pour a full bottle of Sea Foam IC5 Fuel Injector Cleaner into your fuel tank. One bottle treats up to 25 gallons or 95 liters. For best results, add the Sea Foam when the tank is low to maximize cleaning concentration.
Sea Foam works by removing harmful residues and deposits from fuel passageways, intake valves, pistons, and chamber areas.
For cleaning, add 2 or more ounces of Sea Foam per gallon of fuel. 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.
Yes, Sea Foam is made with safe ingredients that won't harm your engine or equipment. It is safe for all types of gasoline fuel injection engines.











































