Fogging Oil, 12 ounce | STABIL-22001

STA-BIL Fogging Oil | 12 oz. Aerosol | Part #22001 | All 2-Cycle & 4-Cycle Gasoline Marine Engines | Outboard, Inboard & Sterndrive

Every cylinder wall, piston ring, and valve surface in your marine engine is exposed to moisture, residual combustion acids, and bare metal contact during storage — the exact conditions that cause internal corrosion and startup scuffing when you launch in the spring. STA-BIL #22001 fogging oil coats those surfaces with a protective lubricating film before shutdown, displacing moisture and neutralizing acids so your engine comes out of storage in the same condition it went in. Unlike brand-specific OEM fogging oils, the STA-BIL 22001 is formulated for all 2-cycle and 4-cycle gasoline engines — one can works across your entire fleet of outboards, inboards, sterndrives, and small gasoline engines.

Part Details:

• Part Number: 22001
• Manufacturer: STA-BIL
• Type: Engine Fogging Oil
• Size: 12 oz. aerosol spray can
• Compatible With: All 2-cycle and 4-cycle gasoline engines — outboard, inboard, sterndrive, and small gasoline engines
• Use: Internal engine protection during seasonal or long-term storage
• Condition: New

Additional Information

How STA-BIL Fogging Oil Protects Your Marine Engine During Storage:

Fogging oil works by coating the internal surfaces of your engine — cylinder walls, piston rings, valve stems, and combustion chamber surfaces — with a film that does three things simultaneously:

• Displaces moisture — pushes water off metal surfaces before it can begin oxidizing the bare metal of cylinder walls and ring lands
• Neutralizes combustion acids — residual acids from combustion remain in the cylinder after shutdown and attack unprotected metal during storage; the protective film creates a barrier between the acid and the metal surface
• Lubricates on first startup — the film remaining on cylinder walls after storage provides lubrication during the critical first seconds of startup before oil pressure builds, reducing dry-start wear on rings and cylinder walls

How to Apply STA-BIL Fogging Oil:

Carbureted outboards and inboards: With the engine running and at operating temperature, spray fogging oil directly into the carburetor throat in short bursts until the engine begins to smoke and stumble, then shut down. This deposits the protective film throughout the intake tract, combustion chambers, and cylinder walls.

Fuel-injected engines: Remove the air intake or air box and spray fogging oil directly into the intake while the engine is running. Consult your engine's service manual for the specific fogging procedure for your engine — some EFI engines have specific requirements.

External surfaces: Spray on throttle cables, linkages, electrical connectors, and exposed metal to displace moisture and prevent corrosion during storage.

Why STA-BIL vs. OEM Brand-Specific Fogging Oil:

OEM fogging oils (like BRP/Johnson/Evinrude or Mercury) are formulated for their specific engine lines and are the best choice when you need to follow OEM service specifications exactly. STA-BIL 22001 is the right choice when you need one product that works across multiple engine brands and types — a single can for your outboard, your generator, your backup engine, and your small gasoline equipment. Both provide effective fogging protection; the choice depends on whether OEM spec compliance is required for your application.

Frequently Asked Questions

1. Does this fogging oil work on my specific outboard brand?
STA-BIL 22001 is formulated for all 2-cycle and 4-cycle gasoline outboard, inboard, and sterndrive engines regardless of brand — including Johnson, Evinrude, Mercury, Yamaha, Honda, Suzuki, Tohatsu, Volvo Penta, MerCruiser, and others. If your engine's service manual specifies an OEM-branded fogging oil by part number, use the OEM product to maintain factory service compliance. For general winterization where OEM spec is not required, STA-BIL 22001 provides equivalent protection.

2. When should I apply fogging oil?
Apply fogging oil as part of your end-of-season winterization before the engine goes into storage for 30 days or more. Do not skip fogging even for shorter storage periods in humid or salt air environments — internal corrosion can begin within weeks in those conditions.

3. Does fogging oil damage spark plugs?
Fogging oil will foul spark plugs during application — this is normal. Many technicians replace spark plugs as part of the same winterization service. If you don't replace plugs at winterization, remove and inspect them at spring commissioning before the first start.

4. Can I use this on a diesel engine?
No — STA-BIL 22001 is formulated for gasoline engines only. For diesel engine fogging and storage protection, use a product specifically formulated for diesel applications. Using gasoline-engine fogging oil in a diesel engine is not recommended.