AMSOIL Engine Fogging Oil

Protection for Stored Seasonal Equipment

AMSOIL Engine Fogging Oil is a highly effective rust preventative designed to protect internal engine components during storage or long periods of inactivity. Ideal for outboard motors, lawn and garden equipment, motorcycles, snowmobiles, ATVs, motor homes and generators, or any equipment with a two- or four-stroke engine. **NOT AVAILABLE IN CANADA
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AMSOIL Engine Fogging Oil

AMSOIL Engine Fogging Oil is a highly effective rust preventative designed to protect internal engine components during storage or long periods of inactivity.


Two- and four-stroke recreational vehicles, hand-held power equipment, small engines, and construction equipment 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.

Most two- and four-stroke motor oils are formulated to have an affinity to engine component surfaces, acting as a barrier that keeps condensate from contacting engine components and forming corrosion. However, the effectiveness of motor oil in this area diminishes with time.

AMSOIL Engine Fogging Oil (FOG) offers superior film retention, providing long-term protection against corrosion and dry starts, extending engine life, and reducing operating expenses. Its aerosol spray formulation offers easy and clean applications while reaching more components and offering complete distribution of the oil, something especially beneficial in applications with horizontal cylinder orientation, such as outboard motors. Consult equipment owners manual for application directions.

AMSOIL Engine Fogging Oil applications include but are not limited to, motorcycles, snowmobiles, ATVs, outboard motors, sterndrive, and inboard marine engines, personal watercraft, lawn equipment, chainsaws, snowblowers, portable generators, hand-held power equipment, motor scooters, powered farm equipment, powered construction equipment, cars, and trucks.

*All trademarked names and images are the property of their respective owners and may be registered marks in some countries. There is no affiliation or endorsement claim, express or implied, made by their use. AMSOIL products are formulated to meet or exceed the performance requirements set forth by the manufacturers of all applications shown/listed here.

AMSOIL Engine Fogging Oil is available in 12-ounce spray cans.

AMSOIL products are backed by a Limited Liability Warranty. For complete information visit


Your area may have different disposal requirements for aerosols than other waste. Dispose of contents/container in accordance with all federal, state/provincial and local regulations.

Technical Specifications


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Data Bulletins

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