How much fuel does one 16 oz bottle treat?

AMSOIL does not state a single treat rate on the label summary here, so check the bottle's dosing chart before mixing. Buy a second bottle if you are storing several machines or a large boat tank.

How long does it keep gas fresh?

The product is rated to keep fuel fresh for up to 12 months. Add it before storage and run the engine briefly so treated fuel reaches the carburetor or injectors.

Can I use it in a two-stroke engine?

Yes. It is listed for both two-stroke and four-stroke gasoline engines, including motorcycles and boats. Mix it into the fuel as directed.

Is it worth it over a cheaper stabilizer?

It adds ethanol corrosion protection and fuel system cleaning on top of storage stability. If you store ethanol-blend gas in metal tanks or carbureted engines, that extra protection matters.

The best new price seen is $16.59 at AMSOIL as of November 4, 2026, with 2 stores listing it new. Compare both stores before buying, and stock up before winter storage season.

Where is the AMSOIL Gasoline Stabilizer cheapest?

At AMSOIL, for $16.59, as of our latest check.

Where can I buy the AMSOIL Gasoline Stabilizer?

3 stores we checked sell it, including AMSOIL, Tuned Yota, eBay.

AMSOIL Gasoline Stabilizer

Best price now

$16.59at AMSOILObserved at 4:06 PM

Compared across 2 stores. Prices are checked against each store and labelled with when.

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Our take on the AMSOIL Gasoline Stabilizer

AMSOIL Gasoline Stabilizer is a 16 oz fuel additive that keeps gasoline fresh for up to 12 months in stored equipment. It targets ethanol corrosion, varnish and gum buildup, and keeps fuel systems and tanks clean. It suits seasonal gear like mowers, boats, motorcycles and classic cars. The best new price is $16.59 at AMSOIL as of November 4, 2026, with 2 stores listing it new.