Fuel Treatment
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Starbrite Star Tron Gas Additive 8 Oz 93008
Starbrite
$14.99 $11.23Starbrite Star Tron Gas Additive 8 Oz 93008 • Cures & prevents ethanol fuel problems• Makes any engine run more smoothly, start more easily• Eliminates & prevents gum, varnish and carbon deposits• Stabilizes fuel, helps...- Part Number:
- 74-93008
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 8 fl. oz.
- Treats:
- 125 gal.
$14.99 $11.23 -
STA-BIL 360 Marine Boat Formula Ethanol Treatment (32 oz) 22240
STA-BIL
$32.99 $26.99STA-BIL Marine Formula 32oz 22240 Ethanol Treatment & Performance Improver Extra corrosion protection & fuel system cleaning Recommended to be used at every fill up, not just for seasonal storage Double the corrosion preventers than in...- Part Number:
- 269-22240
- Availability:
- In Stock - Ships same or next business day.
- Size:
- Quart
- Treats:
- 320 gal.
$32.99 $26.99 -
STA-BIL Gas Stabilizer 32oz 22214
STA-BIL
$24.99 $17.32STA-BIL Gas Stabilizer 32oz 22214 Keeps fuel fresh for quick, easy starts after storage Removes water according to OEM specs to prevent corrosion Cleans carburetors and fuel injectors Protects engine from gum, varnish, rust, and corrosion ...- Part Number:
- 269-22214
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 32 oz.
- Treats:
- 80 gal.
$24.99 $17.32 -
Starbrite Star Tron Gas Additive 32 Oz 93032
Starbrite
$48.19 $30.87Starbrite Star Tron Gas Additive 32 Oz 93032 • Cures & prevents ethanol fuel problems• Makes any engine run more smoothly, start more easily• Eliminates & prevents gum, varnish and carbon deposits• Stabilizes fuel, helps...- Part Number:
- 74-93032
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 32 oz.
- Treats:
- 512 gal.
$48.19 $30.87 -
STA-BIL Gas Stabilizer 16oz 22207
STA-BIL
$13.99 $11.70STA-BIL Gas Stabilizer 16oz 22207 Keeps fuel fresh for quick, easy starts after storage Removes water according to OEM specs to prevent corrosion Cleans carburetors and fuel injectors Protects engine from gum, varnish, rust, and corrosion ...- Part Number:
- 269-22207
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 16 oz.
- Treats:
- 40 gal.
$13.99 $11.70 -
Starbrite Star Tron Diesel Additive 8 Oz 93108
Starbrite
$22.59 $14.96Starbrite Star Tron Diesel Additive 8 Oz 93108 • Makes any engine run more smoothly, start more easily Eliminates & prevents carbon deposits Stabilizes fuel, greatly reduces soot & other emissions Improves cetane of old, substandard fuel 1...- Part Number:
- 74-93108
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 8 oz.
- Treats:
- 256 gal.
$22.59 $14.96 -
STA-BIL Marine Formula (8 oz) Ethanol Treatment 22239
STA-BIL
$15.49 $10.99STA-BIL Marine Formula 8oz 22239 Ethanol Treatment & Performance Improver Extra corrosion protection & fuel system cleaning Recommended to be used at every fill up, not just for seasonal storage Double the corrosion preventers than in...- Part Number:
- 269-22239
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 8 oz.
- Treats:
- 80 gal.
$15.49 $10.99 -
CRC W-Fuel Stabilizer 8oz 6161
CRC
$16.29 $9.35CRC W-Fuel Stabilizer 8oz 6161 For all 2 and 4 cycle engines. Prevents fuel separation caused by ethanol. Keeps fuel fresh during storage, protects against corrosion, prevents gum and resin build-up, keeps filters and injectors clean. Non-staining.- Part Number:
- 77-06161
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 8 oz.
- Treats:
- 40 gal.
$16.29 $9.35 -
STA-BIL Diesel Stabilizer 32oz 22254
STA-BIL
$29.99 $26.99STA-BIL Diesel Stabilizer 32oz 22254 Prevents sludge and sediment formation Cleans & lubricates fuel injectors to improve performance Helps remove water that microbes and algae require for growth Recommended for use at every fill up...- Part Number:
- 269-22254
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 32 oz.
- Treats:
- 320 gal.
$29.99 $26.99 -
STA-BIL Gas Stabilizer 10oz 22206
STA-BIL
$9.99 $7.33STA-BIL Gas Stabilizer 10oz 22206 Keeps fuel fresh for quick, easy starts after storage Removes water according to OEM specs to prevent corrosion Cleans carburetors and fuel injectors Protects engine from gum, varnish, rust, and corrosion ...- Part Number:
- 269-22206
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 10 oz.
- Treats:
- 25 gal.
$9.99 $7.33 -
Sold Out, please call for ETA.
Starbrite Diesel Water Absorber 16 Oz. 84616
Starbrite
$28.39 $20.09Starbrite Diesel Water Absorber 16 Oz. 84616 • Absorbs free water from diesel fuel and allows it to be safely burned away• Helps prevent corrosion of fuel delivery system and costly repairs- Part Number:
- 74-84616
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 16 fl. oz.
- Treats:
- 275 gal.
$28.39 $20.09 -
Starbrite Fuel System/Inject Cleaner 4Oz 96604
Starbrite
$11.59 $7.99Starbrite Fuel System/Inject Cleaner 4Oz 96604 • Engineered to remove tough deposits in fuel systems Cleans Injectors, carburetors, fuel pumps, valves & rings Simple to use, add to fuel and run engine Combines Star Tron enzymes with powerful...- Part Number:
- 74-96604
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 4 oz.
- Treats:
- 40 gal
$11.59 $7.99 -
Starbrite Gas Storage Additive-8 Oz (W) 84308
Starbrite
$15.89 $10.35Starbrite Gas Storage Additive-8 Oz (W) 84308 • Protects gas and engine components during storage• For inboard and outboard gas engines• Eliminates need to fog engine• Prevents corrosion of fuel tank and delivery system•...- Part Number:
- 74-84308
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 8 oz.
- Treats:
- 40 gal.
$15.89 $10.35 -
Starbrite Star Tron Gas Additive 16Oz 93016
Starbrite
$30.39 $23.39Starbrite Star Tron Gas Additive 16Oz 93016 • Cures & prevents ethanol fuel problems• Makes any engine run more smoothly, start more easily• Eliminates & prevents gum, varnish and carbon deposits• Stabilizes fuel, helps...- Part Number:
- 74-93016
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 16 oz.
- Treats:
- 256 gal.
$30.39 $23.39 -
Starbrite Star Tron Gas Additive Gallon 93000
Starbrite
$174.69 $113.81Starbrite Star Tron Gas Additive Gallon 93000 • Cures & prevents ethanol fuel problems• Makes any engine run more smoothly, start more easily• Eliminates & prevents gum, varnish and carbon deposits• Stabilizes fuel, helps...- Part Number:
- 74-93000
- Availability:
- In Stock - Ships same or next business day.
- Size:
- Gallon
- Treats:
- 2048 gal.
$174.69 $113.81 -
Starbrite Star Tron Tank Cleaner 64 Oz 93664
Starbrite
$53.42Starbrite Star Tron Tank Cleaner 64 Oz 93664 • Gasoline and diesel fuel tank cleaner for the tank that has extremely heavy sludge and related deposits before starting on a regular Star tron treatment program• Will safely clean fuel tank walls...- Part Number:
- 74-93664
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 64 oz.
- Treats:
- 250 gal.
$53.42 -
Sierra Fuel Tester-Gasoline 18-79816
Sierra
$12.29 $10.44Sierra Fuel Tester-Gasoline 18-79816Tests quality of fuel by measuring alcohol content.- Part Number:
- 47-79816
- Availability:
- In Stock - Ships same or next business day.
$12.29 $10.44 -
Starbrite Star Tron Diesel Add Gallon 93100N
Starbrite
$233.99 $145.97Starbrite Star Tron Diesel Add Gallon 93100N • Makes any engine run more smoothly, start more easily Eliminates & prevents carbon deposits Stabilizes fuel, greatly reduces soot & other emissions Improves cetane of old, substandard fuel 1...- Part Number:
- 74-93100
- Availability:
- In Stock - Ships same or next business day.
- Size:
- Gallon
- Treats:
- 4096 gal.
$233.99 $145.97 -
Starbrite Star Tron Diesel Additive 32Oz 93132
Starbrite
$62.29 $41.50Starbrite Star Tron Diesel Additive 32Oz 93132 • Makes any engine run more smoothly, start more easily Eliminates & prevents carbon deposits Stabilizes fuel, greatly reduces soot & other emissions Improves cetane of old, substandard fuel 1...- Part Number:
- 74-93132
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 32 oz.
- Treats:
- 1024 gal.
$62.29 $41.50 -
Starbrite Startron Ring Clean 16Oz 95616
Starbrite
$23.09 $18.54Starbrite Startron Ring Clean 16Oz 95616 • Formulated with the latest technology in deposit control compounds, plus a proprietary enzyme package designed to remove existing deposits and help prevent the formation of new deposits• Improves fuel...- Part Number:
- 74-95616
- Availability:
- In Stock - Ships same or next business day.
- Size:
- 16 oz (473 ml)
$23.09 $18.54
Fuel Treatment for Boats
Protect your engine and improve performance with premium boat fuel treatment products from PowerBoatSupply.com. Whether you need gas stabilizers, diesel additives, or complete marine fuel system cleaners, our wide selection from trusted brands like STA-BIL, Star Tron, and CRC keeps your boat’s fuel fresh and your engine running at peak performance. A small investment in the right marine fuel additive can prevent costly repairs and extend the life of your engine.
Why Use Fuel Treatment in Your Boat?
Modern fuels often contain ethanol, which attracts water and can cause corrosion, fuel separation, and hard starts in marine engines. The right fuel stabilizer prevents fuel breakdown during storage, while additives clean injectors and carburetors for smoother operation. For diesel-powered boats, specialized diesel fuel additives prevent gelling, improve lubricity, and protect against microbial growth in fuel tanks.
Our Fuel Treatment Selection
We carry a complete line of fuel treatments and additives for both gas and diesel engines, including:
- Fuel stabilizers – Keep gasoline fresh during long-term storage
- Marine fuel system cleaners – Remove carbon deposits and varnish buildup
- Diesel fuel additives – Prevent gelling and improve winter performance
- Water absorbers – Eliminate excess moisture from fuel tanks
From seasonal storage to everyday boating, our inventory has the right solution to maintain your boat’s engine health and efficiency.
When Should You Use Marine Fuel Additives?
Fuel treatments are especially important before storing your boat for winter. Add a stabilizer to your fuel tank and run the engine so treated fuel circulates through the system. For frequent boaters, using a cleaner every few fill-ups helps reduce carbon deposits and maintain smooth throttle response. Diesel boat owners should use additives year-round to prevent injector wear and keep fuel flowing in cold weather.
Shop Fuel Treatment Products Online
PowerBoatSupply.com makes it easy to shop for boat fuel stabilizers, cleaners, and diesel fuel additives from leading marine brands. With fast shipping, competitive pricing, and our decades of experience in marine parts and accessories, you can trust us to keep your boat’s fuel system in top condition. Order today and protect your engine for seasons to come.