AMSOIL ENGINE FOGGING OIL

Protect your engine from rust and dry-start damage during storage with this easy-to-use spray for all two- and four-stroke engines.

Product Code	Package Size	Unit of Measure
FOGSC-EA	12 oz. Spray Can	Each
FOGSC-CA	12 oz. Spray Can	Case of 12

Buy Now Product Data Sheet (PDF) $ Exclusive Offer

Product Details

AMSOIL Engine Fogging Oil is a dedicated rust preventive spray designed to protect internal engine components from corrosion and dry-start damage during seasonal storage or extended periods of inactivity. It delivers superior film retention compared to standard motor oil, keeping cylinder liners, piston rings, bearings, and seal surfaces protected until you're ready to fire things up again.

Seasonal equipment takes a beating from neglect, not just from use. Snowmobiles sit all summer. Outboard motors collect dust from October to May. Lawn mowers, chainsaws, ATVs, generators, and personal watercraft all go through months-long stretches where the engine sits idle. During that downtime, temperature swings cause water vapor to condense inside the engine, and that moisture goes straight to work corroding exposed steel and iron surfaces. Standard motor oil offers some residual protection, but its ability to cling to metal surfaces and block moisture fades over time. That is where a purpose-built fogging oil earns its keep.

PREVENTS CORROSION DURING LONG-TERM STORAGE
Condensation forming on cylinder liners, piston rings, anti-friction bearings, and rotational seal contact surfaces is the primary threat to stored engines. AMSOIL Engine Fogging Oil is formulated with superior film retention properties that maintain a protective barrier between moisture and bare metal long after conventional motor oil would have drained away or lost its effectiveness. This makes it an essential step when winterizing outboard motors, storing snowmobiles for the off-season, or putting a Husqvarna chainsaw away after fall cutting.

PROTECTS AGAINST DRY-START DAMAGE
When an engine sits for months, the oil film on cylinder walls eventually dries out. The first startup after storage can cause scuffing and scoring as metal contacts metal before fresh oil circulates. Fogging oil clings to cylinder walls and internal components throughout the storage period, keeping surfaces lubricated so that spring startup does not turn into a dry-start disaster. This is especially relevant for two-stroke engines in snowmobiles and personal watercraft where cylinder wall condition is critical to compression and performance.

AEROSOL SPRAY REACHES HORIZONTAL CYLINDERS AND TIGHT SPACES
The 12-ounce aerosol can format makes application fast and thorough. Spray delivery gets fogging oil into areas that are difficult to coat with poured oil, and it distributes evenly across all internal surfaces. This is particularly valuable for outboard motors and other engines with horizontal cylinder orientation, where gravity would pull poured oil away from upper cylinder walls. One can handles multiple pieces of equipment in a single winterizing session.

BROAD APPLICATION RANGE FOR TWO-STROKE AND FOUR-STROKE ENGINES
AMSOIL Engine Fogging Oil works in virtually any two-stroke or four-stroke engine. Applications include motorcycles, snowmobiles, ATVs, outboard motors, stern drive and inboard marine engines, personal watercraft, lawn mowers, chainsaws, snowblowers, portable generators, handheld power equipment, motor scooters, powered farm equipment, powered construction equipment, cars, and trucks. Consult your equipment owner's manual for specific application directions.

Compatibility & Applications
AMSOIL Engine Fogging Oil is safe for use in all two-stroke and four-stroke gasoline engines across recreational, marine, lawn and garden, farm, and construction equipment categories. It is available in 12-ounce aerosol spray cans, sold individually or by the case of 12.

Frequently Asked Questions

AMSOIL Engine Fogging Oil (FOGSC) is designed for a wide range of two- and four-stroke engines that are stored seasonally or operated infrequently. Applications include motorcycles, snowmobiles, ATVs, outboard motors, stern drive and inboard marine engines, personal watercraft, lawn equipment, chainsaws, snowblowers, portable generators, hand-held power equipment, motor scooters, powered farm equipment, powered construction equipment, and cars and trucks.

AMSOIL Engine Fogging Oil provides superior film retention that coats internal engine components such as cylinder liners, piston rings, anti-friction bearings, and steel/iron contact surfaces on rotational seals. This persistent oil film acts as a barrier that prevents water vapor condensation from directly contacting metal surfaces, protecting against corrosion formation during long storage periods. It also prevents cylinders from drying out, which can cause permanent damage from dry starts when equipment is taken out of storage.

AMSOIL Engine Fogging Oil is available in 12-ounce aerosol spray cans, sold individually or in cases of 12. The aerosol spray formulation allows for easy, clean application while reaching more internal engine components and providing complete distribution of the oil. This spray delivery is especially beneficial for engines with horizontal cylinder orientation, such as outboard motors. Users should consult their equipment owner's manual for specific application directions.

While most two- and four-stroke motor oils do have some affinity to engine component surfaces and can act as a barrier against condensation, their effectiveness in this area diminishes over time during extended storage. AMSOIL Engine Fogging Oil is specifically formulated for superior film retention, meaning it maintains its protective coating on internal engine surfaces far longer than standard motor oil. This makes it a more reliable solution for preventing corrosion and dry-start damage on seasonally stored equipment.

AMSOIL Engine Fogging Oil is sprayed directly into the engine's intake or spark plug holes to coat internal components before seasonal storage. The aerosol format ensures complete distribution of the protective oil film, which is especially important for outboard motors and other engines with horizontal cylinder orientations where gravity alone won't distribute oil evenly. For specific application procedures, AMSOIL recommends consulting your equipment's owner's manual.

Yes, AMSOIL Engine Fogging Oil is formulated for use in both two-stroke and four-stroke engines across a broad range of equipment types. It is compatible with motorcycles, snowmobiles, ATVs, marine engines, lawn equipment, chainsaws, generators, farm equipment, construction equipment, and cars and trucks. The product is backed by AMSOIL's Limited Liability Warranty. Note that AMSOIL Engine Fogging Oil is not available in Canada.