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STA-BIL Marine Fuel Stabilizer

STA-BIL Marine Fuel Stabilizer

4.8· 382 ratings

Best price now

$11.00at Tactical Surplus USAObserved at 4:06 PM

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Our take on the STA-BIL Marine Fuel Stabilizer

STA-BIL Marine is an 8 oz liquid fuel additive for boats, jet skis and other watercraft. It stabilizes fuel for up to 12 months, treats ethanol-blended and non-ethanol marine fuel, and adds corrosion protection and fuel-system cleaning. It contains no alcohol. The best new price is $11.00 at Tactical Surplus USA as of November 4, 2026, with 4 stores listing it new.

Best forBoat owners storing fuel over winterJet ski and PWC ownersEthanol-blended marine fuel usersOwners of carbureted or fuel-injected marine engines
Pros
  • Stabilizes fuel for up to 12 months
  • Works with ethanol and non-ethanol marine fuel
  • Adds corrosion protection for metal fuel-system parts
  • Cleans the fuel system
  • Alcohol-free formula
  • Small 8 oz bottle treats a typical tank
Cons
  • 8 oz size means buying several bottles for large tanks
  • Liquid must be measured and poured, unlike a pre-measured dose
  • No fuel-line antifreeze claim; freezing point listed at 32 °F
  • Marine-specific, so not the pick for cars or small equipment

STA-BIL Marine Fuel Stabilizer prices at every store

  • Tactical Surplus USANew

    In stock

    $11.00Observed at 4:06 PM
    Visit store
  • Tractor Supply CompanyNew

    In stock

    $12.99Observed at 4:06 PM
    Visit store
  • Fleet FarmNew

    Availability unknown

    $11.99Observed at 4:06 PM
    Visit store

Also available at

  • Academy Sports + OutdoorsCheck price at Academy Sports + Outdoors
  • eBayCheck price at eBay
  • Ace HardwareCheck price at Ace Hardware
  • Acme ToolsCheck price at Acme Tools
  • Cycle GearCheck price at Cycle Gear
  • Blain's Farm & FleetCheck price at Blain's Farm & Fleet
  • Grainger Industrial SupplyCheck price at Grainger Industrial Supply
  • MenardsCheck price at Menards

STA-BIL Marine Fuel Stabilizer price history

Lowest price we've seen: $8.79 on Nov 4 at Academy Sports + Outdoors. Tracked across 10 stores since Nov 4.

What reviewers say

Owners rate it highly, 4.8 out of 5 from 382 ratings, and most use it for winter storage and ethanol fuel. Complaints center on bottle size and dosing for big tanks.

Pros
  • Keeps stored fuel from going bad over winter
  • Helps with ethanol-related fuel problems
  • Easy to add at fill-up
  • Trusted brand for marine use
Cons
  • Small bottle goes fast on large tanks
  • Dosing for partial tanks takes care
  • Price per ounce adds up over a season

Specifications

Product Type
Fuel Additive
Boiling Point
180 °F
Freezing Point
32 deg
Protection Provided
Corrosion protection
Temperature Range
Year-round
Additive Function
Cleans the fuel system
Corrosion Protection
Yes
Additive Type
Ethanol Treatment, Fuel Stabilizer
Cleaning
Yes (fuel system)
Efficiency Benefits
Improved fuel efficiency
Stability
Fuel stability (up to 12 months)
Engine Type
Marine engines
Compatible Fuel Type
Non-Ethanol marine fuels, Ethanol-blended fuels
System Compatibility
Fuel system
Vehicle Type
Boat, Boats, Jet ski, Jet skis, Water sport engines
Material Compatibility
Metal parts of the entire fuel system and combustion chamber
Compatible With Other Fluids
Water
Volume
8 oz
Form Type
Liquid
Package Size
8 oz
Container Type
Bottle
Chemical Composition
Does not contain alcohol
Flash Point
173 °F
Viscosity
3

Questions and answers

Is STA-BIL Marine worth it for winter storage?
Yes, if you store a boat or jet ski with fuel in the tank. It stabilizes fuel for up to 12 months and adds corrosion protection, which matters in damp marine storage.
How much do I add per gallon?
Follow the ratio on the bottle label for your tank size. The 8 oz bottle is sized for a typical small tank, so larger tanks need more than one bottle.
Can I use it with ethanol fuel?
Yes. It is formulated for both ethanol-blended and non-ethanol marine fuels and contains no alcohol itself.
Is it the same as regular STA-BIL?
No. STA-BIL Marine is aimed at boats, jet skis and water sport engines, with corrosion protection for marine fuel systems. Use the marine version for watercraft.
When is it cheapest?
The best new price was $11.00 at Tactical Surplus USA as of November 4, 2026. Prices vary by store, so compare the 4 listings before buying.
Where is the STA-BIL Marine Fuel Stabilizer cheapest?
At Tactical Surplus USA, for $11.00, as of our latest check.
What do buyers say about the STA-BIL Marine Fuel Stabilizer?
Rated 4.8 out of 5 from 382 ratings.
Where can I buy the STA-BIL Marine Fuel Stabilizer?
11 stores we checked sell it, including Tactical Surplus USA, Fleet Farm, Tractor Supply Company, Academy Sports + Outdoors, eBay.

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