Boat Fuel Additives & Antifreezes

40 results
Fisheries Supply is your premier supplier of marine fuel additives from top brands like Starbrite, Sta-bil and Stanadyne. Stored fuel can oxidize in the tank, forming sediments from mold and bacteria – so a good marine fuel stabilizer is critical in helping those sediments decompose before they contaminate your fuel lines and filters. We offer a full range of gasoline additives for boats, along with antifreeze coolants, fogging oils, carb cleaners and engine flushes – everything you need to prepare your boat for long periods of downtime. Shop for your boat fuel additives now and save – or browse our wide selection of boat motor oil.
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Biobor JF Diesel Fuel Additive

Biobor

Biobor JF Diesel Fuel Additive

Available in 6 options

In Stock
PEAK 50/50 EXTENDED LIFE ANTIFREEZE

Chevron

Delo ELC Extended Life 50/50 Engine Antifreeze / Coolant

SKU: 171840 | Item ID: W/S 50/50 EXTENDED LIFE

In Stock
CHEV SUP TURBO PWR NON-DIL (GREEN)

Chevron

Havoline Conventional Antifreeze / Coolant

SKU: 163875 | Item ID: W/S ENGINEANTIFREEZE

In Stock
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Stanadyne Fuel Additive

Lubricity Formula Diesel Fuel Additive

Available in 5 options

In Stock
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Stanadyne Fuel Additive

Performance Formula Warm Weather Blend

Available in 5 options

In Stock
EB Gasoline Ethanol Additive

Biobor

Biobor EB Gasoline Ethanol Additive

Available in 3 options

In Stock
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Stanadyne Fuel Additive

Performance Formula All-Season Diesel Fuel Additive

Available in 5 options

In Stock
MD Diesel Conditioner

Biobor

MD Diesel Conditioner

Available in 4 options

In Stock
Marine Descaling Fluid - Concentrate

StarBrite

Marine Descaling Fluid - Concentrate

SKU: 1030130 | Item ID: STB 83900

In Stock
StarTron® Gasoline/Diesel Additive

StarBrite

Star Tron Enzyme Fuel Treatment - Mid-Sized Engine Formula

Available in 6 options

In Stock
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Stanadyne Fuel Additive

Performance Formula Injector Cleaner Diesel Fuel Additive

Available in 3 options

In Stock
9570 of Sierra Carbon Free Aerosol Cleaner

Sierra

Carbon Free Aerosol Cleaner

SKU: 151503 | Item ID: SIE 18-9570-0

In Stock
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Stanadyne Fuel Additive

Gasoline Fuel Additive +

SKU: 443579 | Item ID: STY 38557P

In Stock
Marine Descaling Fluid

StarBrite

Marine Descaling Fluid -

SKU: 1028062 | Item ID: STB 84000

In Stock
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Stanadyne Fuel Additive

Winter 1000 Diesel Fuel Additive

Available in 3 options

In Stock
Fuel Stabilizer

Sierra

Marine Fuel Stabilizer - Gasoline Performance Additive

Available in 3 options

In Stock
BTE Liquid Coolant Additive

Baldwin Filters

BTE Cooling System Maintenance Treatment

Available in 3 options

In Stock
Prime Guard -50 Deg F RV Antifreeze - Glycerin Free

Prime Guard

Prime Guard -50 Deg F RV Antifreeze - Glycerin Free

SKU: 1034961 | Item ID: PMG PRIM95006

In Stock
Star Tron Enzyme Fuel Treatment - Gasoline Additive

StarBrite

Star Tron Enzyme Fuel Treatment - Small Engine Formula

Available in 3 options

In Stock
StarTron® Gasoline/Diesel Additive

StarBrite

Star Tron Enzyme Fuel Treatment - Large Engine Formula

Available in 5 options

In Stock
soltron16 of Soltron Soltron Enzyme Fuel Additive/Stabilizer

Soltron

Soltron Enzyme Fuel Additive/Stabilizer

Available in 2 options

In Stock
STA-BIL Marine Formula Gasoline⁄Ethanol Fuel Stabilizer

Sta-Bil Fuel

Marine Formula Gasoline/Ethanol Treatment

Available in 4 options

In Stock
104+ MAX OCTANE BOOST 16 FL OZ

Sta-Bil Fuel

104+ Octane Boost - Maximum Formula

SKU: 216984 | Item ID: SBL 10410

In Stock
Star Tron Stabilizer+ Fuel Storage

StarBrite

Star Tron Stabilizer+ Fuel Storage

Available in 2 options

In Stock
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Sta-Bil Fuel

Storage Formulation - Concentrated Fuel Stabilizer for Gasoline

Available in 6 options

In Stock
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Sta-Bil Fuel

Diesel Treatment

Available in 2 options

In Stock
22004 of Sta-Bil Fuel Starting Fluid

Sta-Bil Fuel

Starting Fluid

SKU: 1009425 | Item ID: SBL 22004

In Stock
104+ OCTANE BOOST 16 FL OZ

Sta-Bil Fuel

104+ Octane Boost - Regular Formula

SKU: 216983 | Item ID: SBL 10406

In Stock
STA-BIL FOGGING OIL 12 OZ CAN

Sta-Bil Fuel

Fogging Oil Aerosol

SKU: 216978 | Item ID: SBL 22001

In Stock
Marine Formula - Ethanol & Non-Ethanol Blended Fuels

Sta-Bil Fuel

Marine Formula - Ethanol & Non-Ethanol Blended Fuels

SKU: 1018086 | Item ID: SBL 22306

In Stock
18-9751-0 of Sierra Power Trim and Steering Fluid

Sierra

Power Trim and Steering Fluid

Available in 2 options

In Stock
HEET GAS LINE ANTIFEEEZE 12OZ

Sta-Bil Fuel

HEET Gas Line Antifreeze & Water Remover

SKU: 217348 | Item ID: SBL 28201

In Stock
84812 of StarBrite Fogging Oil

StarBrite

Fogging Oil

SKU: 86867 | Item ID: STB 84812

In Stock
Test Tank Cleaner

BoatLife

Test Tank Cleaner

SKU: 210504 | Item ID: BTL 1127

In Stock
Fogging Oil

Sierra

Fogging Oil

Available in 2 options

In Stock
Star*Tron Fuel Tank Cleaner

StarBrite

Star Brite Star Tron Fuel Tank Cleaner

Available in 2 options

Special Order Only
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StarBrite

Ring Clean Plus

SKU: 448405 | Item ID: STB 95616

Special Order Only
8OZ DIESEL STORAGE ADDITIVE

StarBrite

Star Brite EZ-To-Store EZ-To-Start Diesel Additive

SKU: 86865 | Item ID: STB 84408

Special Order Only
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StarBrite

LPC Multifunctional Diesel Additive

SKU: 384808 | Item ID: STB 095500

Special Order Only
PT DIESEL H20 ABSORBER

StarBrite

Diesel Fuel Water Absorber

SKU: 64558 | Item ID: STB 84616

Special Order Only
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