STA-BIL Marine Fuel System Treatment bottle ready for the boat engine
STA-BIL Marine Fuel System Treatment being poured to treat fuel
STA-BIL Marine Fuel System Treatment label showing in-season protection
Engine compartment with STA-BIL bottle ready for use
Dockside scene with STA-BIL product alongside boating gear
STA-BIL Marine Fuel System Treatment 6-pack carton
Close-up of engine bay with STA-BIL treatment for corrosion protection
STA-BIL bottle in sunlight highlighting stabilizing formula
Instruction card beside bottle demonstrating dosing ratio
Boat engine running smoothly after STA-BIL marine treatment
STA-BIL Marine Fuel System Treatment bottle ready for the boat engine
STA-BIL Marine Fuel System Treatment being poured to treat fuel
STA-BIL Marine Fuel System Treatment label showing in-season protection
Engine compartment with STA-BIL bottle ready for use
Dockside scene with STA-BIL product alongside boating gear
STA-BIL Marine Fuel System Treatment 6-pack carton
Close-up of engine bay with STA-BIL treatment for corrosion protection
STA-BIL bottle in sunlight highlighting stabilizing formula
Instruction card beside bottle demonstrating dosing ratio
Boat engine running smoothly after STA-BIL marine treatment

STA-BIL Marine Fuel System Treatment – Full System Cleaner & Injector Cleaner (32oz, 6 Pack)

Keep Your Boat’s Fuel System Clean and Protected STA-BIL Marine Fuel System Treatment is a comprehensive cleaner...
Vendor: STA-BIL
Availability: In stock
£165.11
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STA-BIL Marine Fuel System Treatment bottle ready for the boat engine

STA-BIL Marine Fuel System Treatment – Full System Cleaner & Injector Cleaner (32oz, 6 Pack)

£165.11
STA-BIL Marine Fuel System Treatment bottle ready for the boat engine
STA-BIL Marine Fuel System Treatment being poured to treat fuel
STA-BIL Marine Fuel System Treatment label showing in-season protection
Engine compartment with STA-BIL bottle ready for use
Dockside scene with STA-BIL product alongside boating gear
STA-BIL Marine Fuel System Treatment 6-pack carton
Close-up of engine bay with STA-BIL treatment for corrosion protection
STA-BIL bottle in sunlight highlighting stabilizing formula
Instruction card beside bottle demonstrating dosing ratio
Boat engine running smoothly after STA-BIL marine treatment

STA-BIL Marine Fuel System Treatment – Full System Cleaner & Injector Cleaner (32oz, 6 Pack)

£165.11
Description
Description
x

Keep Your Boat’s Fuel System Clean and Protected

STA-BIL Marine Fuel System Treatment is a comprehensive cleaner and protective additive designed for in-season use with boats and watercraft. It targets the entire fuel system—injectors, lines, and fuel pumps—using a modern PEA-based formula to help maintain clean fuel pathways and reliable operation. The product blends smoothly with fuel, delivering a clean-sounding, responsive feel to your engine as you head out on the water.

With a focus on removing substances that can hinder performance, this treatment helps prevent the buildup of water, gum, and varnish. The result is a fuel system that can flow more freely, which may support steadier starts and smoother cruising. Its corrosion protection helps shield internal metal components from rust and wear during active seasons, contributing to longer-term durability inside the engine bay.

What it does

  • Removes water and common deposits such as gum and varnish that can impede fuel flow and combustion.
  • Provides corrosion protection for internal fuel system parts, supporting durability during ongoing use.
  • Acts as a performance booster by supporting cleaner fuel delivery and efficient combustion, potentially helping with throttle response and smoother operation.

How to use

  • Pour directly into the fuel tank before filling up. Use 1 ounce per 10 gallons of fuel.
  • Run the engine for about 5 minutes to circulate the treatment through the entire system.

Year-round protection

For year-round confidence, pair STA-BIL Marine Fuel System Treatment with STA-BIL Storage. This combination supports in-season operation and winter storage needs, helping watercraft stay ready for the next outing.

Packaging and compatibility

  • 32-ounce bottle, available as a 6-pack for multiple uses or fleet-friendly stocking.
  • Designed for marine engines and watercraft, including boats, pontoons, and personal watercraft.

FAQ

Q: What is STA-BIL Marine Fuel System Treatment used for?

A: A full fuel system cleaner targeting injectors, lines, and pumps to remove water, gum, varnish, and reduce corrosion in-season.

Q: How do I use STA-BIL Marine Fuel System Treatment?

A: Pour 1 oz per 10 gallons of fuel, then run the engine for about 5 minutes to circulate the treatment.

Shipping & Return
Shipping & Return
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Returns Policy

You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).

You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).

If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.

Shipping

We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.

When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.

Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.

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