Mercury Quicksilver Marine Fuel Additives & Fogging Oils

Mercury Quicksilver Marine Fuel Additives and Fogging Oils Resources and Information

PartsVu.com is happy to offer a wide selection of certified Mercury and Quicksilver fuel additives and fogging oils to match the exact specifications of your Mercury outboard motor. If you need assistance servicing your Mercury outboard, follow along with these helpful guides over on our blog: Mercury fuel system 100-hour service, Mercury 2-Stroke Fuel System – 100-Hour Service.

Browse the rest of our complete selection of Mercury outboard parts, or shop our list of Mercury lubes, oils, and additives categories, including: 

• Mercury Precision Lubricants Engine Oil
• Mercury Marine Gear Lube & Power Trim Fluid
• Mercury Corrosion Inhibitors & Grease
• Mercury Marine Fuel Additives & Fogging Oils
• Quicksilver Marine Engine Oil
• Quicksilver Marine Gear Lube & Power Trim Fluid

We also offer helpful resources to help you maintain your Mercury outboard motor, such as:

• Mercury Outboard Serial Number Lookup
• Mercury Outboard Engine Schematics
• Mercury Outboard 100-hour Service Guides

Mercury Quicksilver Marine Fuel Additives and Fogging Oils FAQs

How do I service my Mercury 4-stroke outboard fuel system?

Use a filter wrench to loosen the existing filter element and use caution when removing it as it will be filled with gasoline. A clear plastic or glass container is helpful to dump the filter and examine the contents. A small amount of debris is common, as is a small amount of water after the fuel has had a moment to settle. More significant amounts of water would warrant further investigation.

Move back to the engine and locate the filter element(s) on the engine. The scope of this service will only include the low-pressure fuel filter and fuel water separator if applicable by model. Mercury recommends that owners do not service their high-pressure fuel filters. Depending on your engine model, the water separator filter (or castle filter) may be removed by using a wrench, standard tools, and a little caution. Unplug the water-in-fuel sensor if applicable and spin the cap off of the housing. Replace the filter element with a fresh one, lube the o-ring with grease or oil, and carefully reinstall the cap.

Locate your Mercury engine’s primer bulb if applicable and use the primer to pump up the fuel system. You should feel and hear gasoline entering and filling the filter cup. Check for leaks and prime until the bulb becomes firm.

If you are not already regularly running Mercury Quickare and/or Quickleen through your Mercury fuel system, the 100-hour service interval is an excellent time for a “shock treatment.” Quickare is a fuel system cleaner and top-lube that will help to clean deposits from the tank, lines, carburetors, injectors, and pumps. It breaks up fuel system varnish and will help to prevent gumming.

Quickleen is a fuel system conditioner that also helps to remove carbon deposits. The standard dose is one ounce per ten gallons, but if you are not running the product regularly, you can double that ratio for more cleaning power. Pour the products into the fuel tank fill and run the boat. No additional work is needed. It is a great idea to inspect your fuel tank fill’s o-ring for damage when you add fuel or additives as a damaged o-ring can allow water from rain or boat washing into your fuel system.

Why should I use Mercury fuel additives?

Quickare treats and stabilizes fuel at every fill-up which is necessary because just about all gasoline today contains up to 10% ethanol. Left untreated, ethanol-blended fuel can break down leading to gum and varnish build-up which causes internal engine corrosion. Fuel additives such as a bottle of Quickare keep fuel fresh between fill-ups for up to three months.

The second step within Mercury’s fuel care system cleans your engine and fuel system. All combustion motors develop carbon deposits and the best way to clean those deposits is to add Mercury Quickleen to your fuel tank. Simply add a bottle of Quickleen to your outboard fuel tank once per year to remove carbon deposits, prevent engine knocking, piston seize up, and extend spark plug life. Aggressive fuel system cleaner within Quickleen works to quickly and thoroughly remove carbon deposits from carburetors and fuel injectors, intake valves, spark plugs, piston crowns, and cylinder heads.

Likely, there are periods when your boat is stored or is used infrequently, which can lead to issues with your engine running. If your boat will be sitting for an extended period of time, you need to add a fuel stabilizer like Mercury Marine Quikstor to prevent both regular and ethanol-blended fuels from breaking down, oxidizing, and causing fuel system corrosion, and eventually affecting the engine’s performance. Before storage add a bottle of Quickstor to your fuel tank, then run the engine so that the treated fuel circulates throughout the engine and fuel lines. This extended fuel stabilizer prevents gum and varnish from forming in the engine, fuel lines, and tank and stabilizes fuel for up to one year, thereby successfully averting any fuel-related problems. One ounce of Quickstor treats five gallons of fuel, so a 12-ounce bottle treats 60 gallons.

How do I protect my Mercury outboard motor?

Cover it with Corrosion Guard. This rust inhibitor forms a water-resistant barrier on both painted and unpainted surfaces. We recommend using it at every service interval with a liberal application to all metal engine surfaces. You can also use it on outdrives, lower units, and power trim motors.

The marine environment is one of the harshest on the planet. This is why protecting your boat from corrosion is extremely important. For premium defense against rust, we highly recommend this product.

In order to maximize your engine’s performance, use this complete fuel treatment at every fill-up with any grade of gasoline. Quickare is an excellent defense against the problems associated with ethanol-blended fuels, including its corrosive effects on metals as well as the gum and varnish that result from fuel oxidation. See PartsVu’s Knowledge Center for our article on the problems of ethanol gasoline.

How do I service my Mercury 2-stroke outboard fuel system?

Use a filter wrench to loosen the existing filter element and use caution when removing it as it will be filled with gasoline. A clear plastic or glass container is helpful to dump the filter and examine the contents. A small amount of debris is common, as is a small amount of water after the fuel has had a moment to settle. More significant amounts of water would warrant further investigation.

If your filter’s mounting location allows it, pre-fill the replacement filter with some gasoline to make re-priming the fuel system easier. It is also advisable to use a small amount of grease or engine oil to lubricate the o-ring before installation. Spin on and hand tighten only about a half turn to snug.

Move back to the engine and locate the filter element(s) on the engine. The scope of this service will only include the low-pressure fuel filter and fuel water separator if applicable by model. Mercury recommends that owners do not service their high-pressure fuel filters. Depending on your engine model, the water separator filter (or castle filter) may be removed by using a wrench, standard tools, and a little caution. Unplug the water-in-fuel sensor if applicable and spin the cap off of the housing. Replace the filter element with a fresh one, lube the o-ring with grease or oil, and carefully reinstall the cap.

For most other models, the low-pressure fuel filter is inline where the fuel supply line passes down the side of the cowling. On applicable models, locate the Schrader valve on the fuel system. Cover the valve with a rag or towel and depress the valve stem to vent the pressure from the system before service. With the pressure vented, remove the inline filter and replace it with a new one paying attention to locate the clamps or zip ties securing the hoses to the filter.

Locate your engine’s primer bulb if applicable and use the primer to pump up the fuel system. You should feel and hear gasoline entering and filling the filter cup. Check for leaks and prime until the bulb becomes firm.

If you are not already regularly running Mercury Quickare and/or Quickleen, the 100-hour service interval is an excellent time for a “shock treatment.” Quickare is a fuel system cleaner and top-lube that will help to clean deposits from the tank, lines, carburetors, injectors, and pumps. It breaks up fuel system varnish and will help to prevent gumming.

How to winterize a two stroke outboard motor?

To winterize a two-stroke outboard motor, follow these steps:

• Add fuel stabilizer to the fuel tank and run the engine for a few minutes to distribute the stabilizer through the fuel system.
• Disconnect the fuel line and run the engine until it stalls to clear any remaining fuel from the system.
• Remove the spark plugs and spray fogging oil into the spark plug holes to coat the cylinders and prevent corrosion.
• Drain the lower unit gear oil and replace it with fresh oil.
• Lubricate all the moving parts of the engine with a marine lubricant.
• Store the outboard in a dry, cool place, and cover it to protect it from dust and moisture.

What does fogging oil do?

Fogging oil is a specialized lubricant used to protect the internal components of an engine during long-term storage or periods of inactivity, such as over the winter months.

When sprayed into the intake of an engine while it is running, fogging oil coats the internal components of the engine, including the cylinders, valves, and pistons, with a protective layer of oil. This layer helps to prevent corrosion, rust, and other forms of damage that can occur when the engine is not in use.

Fogging oil can also help to lubricate the internal components of the engine and prevent them from drying out or becoming stiff over time, which can prolong the life of the engine.

Overall, fogging oil is an important part of the winterization process for many types of engines, including outboard motors, jet skis, and other types of marine engines, and can help to ensure that the engine remains in good condition during periods of inactivity.

Should you fog a 4 stroke outboard?

It's generally not necessary to fog a 4-stroke outboard engine because it doesn't have a carburetor like a 2-stroke engine does. However, it's always best to check the manufacturer's recommendations for your specific engine and follow their instructions.

How to winterize a 4 stroke Mercury outboard motor?

To winterize a 4-stroke Mercury outboard motor, follow these basic steps:

• Change the engine oil and oil filter.
• Add fuel stabilizer to the fuel tank and run the engine for a few minutes to distribute the stabilizer through the fuel system.
• Flush the cooling system with fresh water and drain it completely.
• Disconnect the battery and store it in a warm, dry place.
• Lubricate all the moving parts of the engine with a marine lubricant.
• Store the outboard in a dry, cool place, and cover it to protect it from dust and moisture.

How to winterize a 2 stroke jet ski?

To winterize a 2-stroke jet ski, follow these steps:

• Add fuel stabilizer to the fuel tank and run the engine for a few minutes to distribute the stabilizer through the fuel system.
• Disconnect the battery and store it in a warm, dry place.
• Remove the spark plugs and spray fogging oil into the spark plug holes to coat the cylinders and prevent corrosion.
• Drain the water from the cooling system and flush it with antifreeze to prevent freeze damage.
• Lubricate all the moving parts of the engine with a marine lubricant.
• Store the jet ski in a dry, cool place, and cover it to protect it from dust and moisture.

What is Mercury Storage Seal?

Mercury Storage Seal is a type of corrosion inhibitor designed to protect internal engine parts during long-term storage or periods of inactivity. It is a petroleum-based product that is applied directly to the engine cylinders through the spark plug holes.

Mercury Storage Seal forms a protective coating on the metal surfaces inside the engine, preventing moisture and other corrosive elements from reaching and damaging the engine parts. This helps to ensure that the engine will start easily and operate smoothly when it is next used, even after a long period of storage.

Mercury Storage Seal is typically recommended for use in marine engines, including outboards and sterndrives, that will be stored for several months or longer, such as during the winter months or when a boat is not in use. It is important to follow the manufacturer's instructions when using this product to ensure proper application and effective protection.

Can Mercury fogging oil damage my outboard engine?

Mercury fogging oil is a specialized lubricant designed to protect the internal components of an outboard engine during long-term storage or periods of inactivity. When used properly, it should not cause any damage to the engine.

However, it is important to follow the manufacturer's instructions when using fogging oil to ensure proper application and avoid any potential issues. Overuse of fogging oil or failure to follow the instructions can result in excessive buildup of oil in the engine, which can potentially cause problems when the engine is restarted.

Additionally, if the engine is not properly prepared for storage before using fogging oil, such as draining the fuel system or changing the oil, there is a risk of damage to the engine due to the buildup of contaminants or degradation of the oil over time.

Therefore, it is important to use fogging oil only as directed by the manufacturer and to properly prepare the engine for storage beforehand to avoid any potential damage.

Do I need to winterize an outboard motor if I haven't taken it out of storage?

If your outboard motor has been in storage, but you have not used it, it is still recommended that you perform winterization procedures before using the motor again. This is because even if the motor has not been used, there may still be moisture or other contaminants inside the engine that can cause damage if left untreated.

How is winterizing a 2 stroke outboard motor different than winterizing a 4 stroke outboard motor?

The process for winterizing a 2-stroke outboard motor is generally similar to that for a 4-stroke outboard, but there are some differences to be aware of.

One key difference is that 2-stroke outboard motors require a fuel/oil mixture to operate, while 4-stroke motors use separate tanks for fuel and oil. When winterizing a 2-stroke motor, it is important to drain the fuel tank and carburetor, and add fuel stabilizer to any remaining fuel to prevent it from breaking down over time.

Another difference is that 2-stroke motors require special attention to the lower unit gear oil. Unlike 4-stroke motors, 2-stroke motors rely on the lower unit gear oil to provide lubrication to the engine's gears, and this oil can break down over time if not properly maintained. When winterizing a 2-stroke motor, it is important to drain and refill the lower unit gear oil to ensure that it is fresh and will provide adequate protection during storage.

Finally, 2-stroke motors are more susceptible to corrosion due to their design, which can allow moisture to accumulate inside the engine. To prevent this, it is important to flush the cooling system with fresh water and then add a corrosion inhibitor to the engine before storage.

What’s the difference between Quicksilver Storage Seal and Mercury Storage Seal?

There is no difference between Quicksilver Storage Seal and Mercury Storage Seal as they are both the same product marketed under different brand names. Both products are designed to provide long-term corrosion protection for inboard and outboard engines during storage periods. They work by forming a protective barrier against moisture and contaminants that can cause corrosion in the engine's internal parts. It is important to follow the manufacturer's instructions for application and storage procedures to ensure the best possible protection for your engine during storage.

Is jet ski fogging oil the same as outboard motor fogging oil?

Jet ski fogging oil and outboard motor fogging oil are essentially the same product, as they serve the same purpose. Both are used to protect the internal components of engines from corrosion and rust during periods of inactivity, such as during winter storage. The main difference between the two may be the viscosity or thickness of the oil, which may vary slightly depending on the manufacturer and product line. It is always important to follow the manufacturer's instructions and recommendations for the specific type of engine you are using, regardless of whether it is a jet ski or outboard motor.

How do you use Quicksilver fogging oil?

Here are the steps to use Quicksilver fogging oil on your outboard motor:

1. Start the engine and allow it to run for a few minutes to warm up.
2. Turn off the engine and remove the spark plug wires from each spark plug. You can also remove the spark plugs themselves if you prefer.
3. Spray a small amount of Quicksilver fogging oil into each spark plug hole. This will coat the internal components of the engine and help protect against rust and corrosion during periods of inactivity.
4. Turn the engine over a few times (without starting it) to distribute the fogging oil throughout the engine.
5. Replace the spark plugs or plug wires, and any other components you may have removed.
6. If you plan to store the engine for an extended period of time, you may also want to change the oil and filter, and add fuel stabilizer to the fuel tank.

It is important to follow the manufacturer's instructions and recommendations when using Quicksilver fogging oil, as well as any other products for your outboard motor.

What is the difference between Quicksilver and Mercury Oil?

Quicksilver is a brand of marine engine parts and lubricants that is owned by Mercury Marine, a division of Brunswick Corporation. Quicksilver oil is made by Mercury Marine and is designed to meet the specific needs of marine engines. Essentially, Quicksilver is a line of products manufactured by Mercury Marine, including oil, while Mercury Oil specifically refers to the engine oil produced by Mercury Marine. So, there is no real difference between Quicksilver and Mercury Oil as they are both manufactured by the same company and designed for use in marine engines.

Should I use a fuel additive for my boat?

Using a fuel additive for your boat can be beneficial in several ways. Fuel additives can help to keep your fuel system clean, prevent corrosion, and improve engine performance. They can also help to stabilize fuel during storage periods to prevent degradation.

However, it is important to choose the right fuel additive for your specific boat and engine type, as using the wrong type of additive can potentially cause damage. Additionally, it is recommended to follow the manufacturer's instructions when using fuel additives, as using too much or using them improperly can also lead to problems. It is always a good idea to consult with a professional or refer to the owner's manual for specific guidance on using fuel additives for your boat.

What is the best fuel cleaner for jetski maintenance?

There are many fuel cleaners available for jet ski maintenance, and the best one for you may depend on your specific needs and the condition of your jet ski. Some popular options include Sea Foam Motor Treatment, Yamaha Ring Free Plus, Star Tron Enzyme Fuel Treatment, and CRC Marine Engine Tune-Up. It is recommended to choose a fuel cleaner that is compatible with your jet ski's fuel system and follow the manufacturer's instructions for use. It is also important to regularly maintain your jet ski's fuel system and use high-quality fuel to prevent the buildup of deposits and other contaminants.

How to winterize an outboard boat motor in dry climates (such as Arizona)?

Winterizing an outboard boat motor in dry climates like Arizona may require a slightly different approach since there's no worry about freezing temperatures. Here are some general steps to follow for winterizing your outboard boat motor in a dry climate:

1. Start by running the engine in a tank of water and adding a fuel stabilizer to the gas tank.
2. Flush the engine with fresh water using a flush kit and let all the water drain out.
3. Change the oil and filter and replace the fuel filter.
4. Remove the propeller and grease the propeller shaft.
5. Remove the spark plugs and spray fogging oil into each cylinder, then reinstall the spark plugs.
6. Disconnect the battery and store it in a dry place with a trickle charger to maintain the charge.
7. Clean the boat thoroughly, including the hull, deck, and all compartments.
8. Cover the boat with a high-quality, breathable cover to protect it from the sun and dust.
9. Store the boat in a dry, covered area or a storage unit to protect it from the elements.

It's also a good idea to refer to your specific outboard motor's owner manual for manufacturer recommendations and guidelines.

How is evinrude ETEC winterization different than a Mercury outboard winterization?

While both Evinrude ETEC and Mercury outboard motors require winterization, the specific steps may vary slightly between the two brands. For example, Evinrude ETEC motors require the fuel system to be stabilized and the powerhead to be fogged, while Mercury outboards may require the fuel system to be treated with fuel stabilizer and the powerhead to be drained of any residual water. It's important to refer to the manufacturer's guidelines for winterizing Evinrude ETEC engines to ensure proper maintenance and avoid any potential damage.

Will a Yamaha outboard winterization kit have the same parts as a Mercury winterizing kit?

No, a Yamaha outb