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Marine Engine & Fuel Additives

For those of us that prefer boating when the sun is out – it’s important to make sure we properly prepare our boat for long periods of downtime. That means winterizing with marine antifreeze during the cold months and using a quality marine fuel stabilizer year round. 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. Fisheries Supply stocks a variety of marine fuel additives, along with antifreeze coolants, fogging oils, carb cleaners and engine flushes from trusted brands like StarBrite, Biobor, Sta-Bil, Peak, Stanadyne, Sierra and more – so shop today and protect your investment.

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2 items in this product group
By: Soltron
Anti-Algae Treatment & Emulsifier for Gasoline & Diesel Fuel...

2 items in this product group
1 Ounce Treats 4 Gallons of Gas or Diesel

6 items in this product group
Packaged for Larger Fuel Tanks • 1 Ounce Treats 32 Gal of Ga...

6 items in this product group
Packaged for Mid-Sized Fuel Tanks • 1 Ounce Treats 16 Gal of...

3 items in this product group
Packaged for Smaller Fuel Tanks • 1 Ounce Treats 6 Gal of Ga...

2 items in this product group
Prevents Sludge and Sediment Formation

5 items in this product group
By: Biobor
A Microbiocide For Fuel and Water in Fuel Storage

4 items in this product group
By: Biobor
Boost Engine Performance and Efficiency

2 items in this product group
Improves Engine Performance

1 item in this product group

6 items in this product group
For Great Year Round Performance and Protection

3 items in this product group
By: Sierra
Gasoline Performance Additive and Stabilizer

1 item in this product group
Improves Fuel Economy & Restors Horsepower & Performance

4 items in this product group
Keeps Fuel Fresh for Quick Easy Starts

2 items in this product group
Synthetic Corrosion Control • Ethanol Fuel Treatment & Stabi...

3 items in this product group
By: Biobor
A Complete Fuel Treatment For Gasoline/Ethanol

2 items in this product group
Gives That Extra Boost in Performance

2 items in this product group
Restored Engine Performance, Increased Horsepower & Improved...

3 items in this product group
For Use When Temperatures are Above 40°F

3 items in this product group
Economic Cold Weather Protection

4 items in this product group
Five Times More Lubricating Than Other Stanadyne Additives

5 items in this product group
Restores/Increase Horsepower

1 item in this product group
Fuel System Revitalizer

1 item in this product group
Starts Engines Fast, Safe for Catalytic Converters & Oxygen ...

3 items in this product group

3 items in this product group
Protectant for Fuel and Engine Components During Storage

1 item in this product group
By: Peak
Use Full-Strength - No Mixing Required

1 item in this product group
Removes Water - Prevents Gas-Line Freeze Up

2 items in this product group
By: Peak
For Potable Water

2 items in this product group
Non-Toxic PG (Propylene glycol) -

3 items in this product group
Cleans, Neutralizes, Dissolves Silica Gels, Corrosion & Buil...

1 item in this product group
By: Chevron
Maximum Protection - Freeze-Up -84°F; Boil-Over +276°F

1 item in this product group
By: Chevron
Prediluted Antifreeze & Coolant

2 items in this product group
750,000 Mile/7 Year/15,000 Hour Protection

2 items in this product group

1 item in this product group
Protect Your Stored Engine from Corrosion

2 items in this product group
By: Sierra

1 item in this product group
By: 3M
Through-the-Engine Formula

1 item in this product group
By: Sierra
Designed to Improve Engine Performance and Efficiency

1 item in this product group
Remove Deposits & Help Prevent the Formation of New Ones

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