STA-BIL In-Season Protection Fuel System Treatment & Injector Cleaner, 10oz
In-Season Protection in the 8 oz bottle — the riding-months treatment that keeps a working fuel system clean.
STA-BIL — ready for the first pull of spring





The quart of In-Season is the family-fleet size: car, truck, mower and boat all drawing their fill-up doses from the same bench bottle between April and October.
It is prevention priced like maintenance — the steady, boring pour that is the reason the injectors never make the season's to-do list.
Prices and availability are read from each product’s live retail listing — the red button opens it in a new tab.
April to October, one bottle runs the driveway.
Treats fill-ups across several machines for the whole working season.
Carb or injection, the detergency keeps fuel paths clean while they work.
Ethanol's water habit is handled dose by dose, not crisis by crisis.
A quart with a steady home next to the oil jug — grab, dose, go.
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In-Season Protection in the 8 oz bottle — the riding-months treatment that keeps a working fuel system clean.
In-Season at four ounces — single-machine, single-season cleaning for the one engine that earns its keep.
Eight sealed 4 oz bottles of In-Season — a glovebox dose for every vehicle, or a season of fresh seals.