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STA-BIL Diesel Fuel Stabilizer

STA-BIL Diesel Fuel Stabilizer

5· 9 ratings

Best price now

$21.99at AmazonObserved at 4:07 PM

23% under what the other stores charge

Compared across 6 stores. Prices are checked against each store and labelled with when.

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Our take on the STA-BIL Diesel Fuel Stabilizer

STA-BIL Diesel Fuel Stabilizer is a 32 oz liquid additive for all diesel engines, including ultra-low sulfur diesel and biodiesel blends. It is built to keep stored fuel fresh, prevent sludge and sediment, remove water, clean and lubricate the fuel system, and protect against corrosion. Its best new price is $21.99 at Amazon as of November 4, 2026, with 6 stores selling it new.

Best forOwners of diesel cars, trucks and boats that sit between usesSeasonal storage and winter layupBiodiesel and ULSD usersPreventing water and corrosion in the fuel system
Pros
  • Works with all diesel engines and ULSD/biodiesel blends
  • Cleans and lubricates the whole fuel system
  • Removes water and fights corrosion
  • Reduces oxidation from thermal breakdown
  • Year-round formula rated for cold and marine conditions
  • Made in the USA from globally sourced components
Cons
  • One 32 oz bottle treats a limited volume of fuel, so large tanks need repeat buys
  • Liquid additive must be measured and poured at each fill
  • No published cetane or lubricity numbers on the label
  • Not a fix for fuel already contaminated with heavy water or microbes

STA-BIL Diesel Fuel Stabilizer prices at every store

  • The General Store SpokaneNew

    In stockReturn policy

    $27.99Observed at 4:06 PM
    Visit store
  • WalmartNew

    In stockSold by SIM Supply Inc

    $35.25Free shippingObserved at 4:07 PM
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  • eBayNew

    In stockSold by marine_parts_source

    $26.39+ $12.95 shippingObserved at 4:07 PM
    Visit store
  • West MarineNew

    In stock

    $29.99+ $9.95 shippingObserved at 4:07 PM
    Visit store
  • Boat OutfittersNew

    In stock

    $28.45+ $33.34 shippingObserved at 4:07 PM
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  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $21.99Observed at 4:07 PM
    Visit store

Also available at

  • eBayCheck price at eBay
  • Factory Hardware StoreCheck price at Factory Hardware Store
  • WalmartCheck price at Walmart

STA-BIL Diesel Fuel Stabilizer price history

Lowest price we've seen: $21.99 on Nov 4 at Amazon. Tracked across 5 stores since Nov 4.

What reviewers say

Rated 5 out of 5 from 9 ratings, a small sample. Owners use it mainly for stored and seasonal diesel and report easier starts and cleaner fuel systems.

Pros
  • Easy starts after storage
  • Keeps fuel fresh over winter
  • Cleans and lubricates the fuel system
Cons
  • Small bottle for the price
  • Dosing takes care on large tanks

From The General Store Spokane

  • Diesel additive that keeps fuel fresh for quick, easy starts
  • Maximized for engine performance
  • Prevents sludge and sediment formation
  • Cleans and lubricates entire fuel system
  • Protects against corrosion
  • Reduces oxidation of diesel fuel caused by thermal breakdown
Sizes
32 oz

About the STA-BIL Diesel Fuel Stabilizer

STA-BIL Diesel Formula Fuel Stabilizer is a diesel additive that keeps fuel fresh for quick, easy starts and maximized for engine performance.

Product Features:

Prevents Sludge and Sediment Formation

Cleans and Lubricates Entire Fuel System

Protects Against Corrosion

Reduces Oxidation Of Diesel Fuel Caused By Thermal Breakdown

Removes Water From The Fuel System

Compatible With All Ultra-Low Sulfur Diesel and Biodiesel Blends

Made in the USA from globally sourced components

Specifications

multipack_quantity
1Source
color
OrangeSource
size
GallonSource
Product Type
Fuel Additive, Fuel Stabilizer
Engine Type
All diesel engines
Compatible Fuel Type

Questions and answers

Is STA-BIL Diesel Fuel Stabilizer worth it?
Yes if your diesel sits for weeks or months, such as a boat, tractor or seasonal truck. It targets the problems storage causes: water, sludge, corrosion and oxidized fuel.
How much fuel does one 32 oz bottle treat?
Dosing follows the label ratio, so one bottle treats a set volume of diesel rather than a full tank of any size. Check the bottle for the exact ratio and measure before pouring.
Does it work with biodiesel and ultra-low sulfur diesel?
Yes. STA-BIL says the formula is compatible with all ultra-low sulfur diesel and biodiesel blends.
Can I use it in a fiberglass fuel tank?
Yes. The product lists compatibility with fiberglass fuel tanks and is intended for the fuel system of any diesel engine.
When is the price lowest?
The best new price found is $21.99 at Amazon as of November 4, 2026, across 6 stores. Watch for multi-bottle deals if you treat fuel often.
Where is the STA-BIL Diesel Fuel Stabilizer cheapest?
At Amazon, for $21.99, 23% under what the other stores charge, as of our latest check.
What do buyers say about the STA-BIL Diesel Fuel Stabilizer?
Rated 5 out of 5 from 9 ratings.
Where can I buy the STA-BIL Diesel Fuel Stabilizer?
7 stores we checked sell it, including eBay, Boat Outfitters, West Marine, Walmart, Amazon.

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All STA-BIL deals and products →
Diesel
System Compatibility
Fuel system
Vehicle Type
Car
Material Compatibility
Fiberglass fuel tanks
Compatible With Other Fluids
Water
Boiling Point
Greater Than 200 F
Freezing Point
-40 F
Protection Provided
Corrosion protection
Temperature Range
Varying marine conditions
Corrosion Protection
Yes
Additive Type
Fuel Stabilizer
Cleaning
Yes
Efficiency Benefits
Improved performance
Lubrication
Yes
Lubricity Improvement
Yes
Stability
Reduces oxidation of diesel fuel caused by thermal breakdown
Volume
32 oz
Form Type
Liquid
Package Size
32 oz