Gold Eagle 22240 32 Oz Marine Formula Sta-Bil

What It Is

The Gold Eagle 22240 32 oz Marine Formula Sta-Bil is a fuel stabilizer and treatment designed to prevent ethanol-related corrosion, gum, and varnish buildup in small engines, particularly those exposed to moisture or marine environments. It’s intended for use in lawn mowers, tractors, trimmers, and other outdoor power equipment, but the “Marine Formula” label indicates a higher concentration of corrosion inhibitors for wet or humid conditions.

Fitment & Compatibility

• Not a physical part – This is a chemical additive, so no deck size, blade length, or model-specific fitment applies. It’s compatible with any gasoline-powered lawn mower, including push mowers, riding mowers, zero-turns, and string trimmers.
• Fuel type – Works with ethanol-blended (E10), conventional, and premium unleaded gasoline. Not suitable for diesel, two-stroke oil premix (unless added to the oil-gas mixture), or engines requiring ethanol-free fuel only.
• Volume – 32 oz treats up to 80 gallons of fuel (per manufacturer: 1 oz per 2.5 gallons). For a typical 1–2 gallon mower tank, a single bottle lasts many seasons.
• Storage – Best used before winter storage or during periods of non-use (30+ days). Pour directly into the fuel tank or add to a gas can before filling.

Key Things to Know

• Low rating (2.7/5) – Only 2 reviews exist, so the score isn’t statistically reliable. Marine Sta-Bil is a niche product; most small engine owners use the standard red Sta-Bil. The marine formula is overkill for dry storage.
• Installation is easy – Just measure and pour. No mixing or tools required. Shake the bottle well before use. Over-treating won’t harm the engine but is wasteful.
• Common gotcha – The marine formula can leave a greasy residue in the carburetor if used excessively. For routine storage (3–6 months), standard Sta-Bil is cheaper and works fine. This product is best for high-humidity coastal areas or boats.
• Shelf life – Once opened, use within 2 years. Keep the cap tight; moisture degrades the stabilizer.

Should You Buy It

Only buy the Gold Eagle 22240 Marine Formula if you store your mower in a damp garage, near saltwater, or in a high-humidity climate (e.g., Gulf Coast, Pacific Northwest). For most users, the standard red Sta-Bil (at half the price) provides equal protection during winter layup. If you’re not in a marine environment, skip this and save $15.