AMSOIL Fuel Additives

Gasoline Stabilizer (AST)
It is difficult to drain all of the fuel from equipment before storage, and doing so would expose the system to other problems, including the formation of rust and corrosion on the bare metal in the tank and fuel system and the drying and cracking of gaskets and seals. Some fuels are pre-treated with oxidation inhibitors that allow them to be stored for short periods without forming excessive deposits, while other fuels have no inhibitors at all.

AMSOIL Gasoline Stabilizer (AST) reduces the oxidation process that occurs when fuel is stored for extended periods, improving performance, extending equipment life and decreasing maintenance expenses.

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Package sizes include:

16-oz. Bottle
16-oz. Bottles (case of 6)

Two- and four-stroke recreational vehicles, hand-held power equipment, small engines, construction and farm equipment are commonly operated seasonally or infrequently, then stored for long periods of time. During these periods of inactivity, and as a result of fluctuations in ambient temperatures, water vapor can form condensate within the engine. When this condensate comes into direct contact with steel and iron components, it forms surface corrosion on cylinder liners, piston rings, anti-friction bearings and steel/iron contact surfaces on rotational seals. Long periods of storage can also dry out cylinders, often resulting in permanent damage when the equipment is taken out of storage and dry started. In addition, fuel within stored equipment tends to oxidize and form varnish and sludge deposits that clog injectors, fuel lines and carburetors, stick floats and cause poor engine performance, starting problems, increased maintenance expenses and decreased equipment life.

1-oz. of AMSOIL Gasoline Stabilizer treats 2.5 gallons of fuel.

Series 2000 Octane Boost (AOB)
Maximizes power and improves performance in all two-cycle and four-cycle gasoline engines. Increases octane number up to seven points. Reduces engine knock, improves ignition and engine response, helps fuel burn cleaner and inhibits corrosion. Recommended for off-road and racing use.

Package sizes include:

12-oz. Bottle
12-oz. Bottles (case of 6)
55-gallon drum

AMSOIL Series 2000 Octane Boost improves the performance of all two-cycle and four-cycle gasoline-fueled engines. Just one treatment significantly increases engine response and power.

AMSOIL Octane Boost reduces engine knock, improves ignition and helps fuel burn cleaner.

AMSOIL Octane Boost is the recommended octane boost for all high-performance off-road and racing applications.

Most users will find one 12-ounce bottle of AMSOIL Octane Boost for 15 gallons of gasoline provides the ideal performance increase.

AMSOIL Octane Boost is also excellent as a lead substitute at same treat rates in collector automobiles, older off-road equipment and pleasure vehicles.

Danger: Combustible, keep away from sparks and flame. Keep out of the reach of children. Harmful or fatal if swallowed.

Performance Features

• Improves performance
• Maximizes power
• Improves ignition
• Helps fuel burn cleaner
• Removes carbon deposits
• Reduces engine knock
• Improves responsiveness

What does “octane number” mean? Why does it matter?

The tendency of a hydrocarbon fuel, such as gasoline, to knock is measured by its octane number. Lower numbers denote a greater knock tendency; higher numbers denote greater knock control. “Knock” is an uncontrolled and explosive ignition of fuel in the combustion chamber. It causes a knocking or pinging sound, robs the engine of power and, left unchecked, causes serious engine damage. Knock may be eliminated with the appropriate octane number.