STA-BIL Marine Tune Up, 16 oz.– Fixes Rough Running Engines – Treats up to 50 Gallons – 16 oz
STA-BIL Marine Tune Up, 16 oz.– Fixes Rough Running Engines – Treats up to 50 Gallons – 16 oz
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STA-BIL Marine Tune Up, 16 oz.– Fixes Rough Running Engines – Treats up to 50 Gallons – 16 oz

|7 ratings
STA-BIL Marine Tune Up, 16 oz.– Fixes Rough Running Engines – Treats up to 50 Gallons – 16 ozSTA BIL Marine Tune Up 16 oz Fixes Rough Running Engines Treats up to 50 Gallons 16 oz2 pack STA BIL Marine Tune Up 16 oz Fixes Rough Running Engines Treats up to 50 Gallons 16 oz4 pack STA BIL Marine Tune Up 16 oz Fixes Rough Running Engines Treats up to 50 Gallons 16 oz3 pack STA BIL Marine Tune Up 16 oz Fixes Rough Running Engines Treats up to 50 Gallons 16 oz
Pack Size:Single

Key item features

  • Fuel Treatment: STA-BIL Marine Tune Up treats up to 50 gallons of fuel, ensuring optimal performance for your marine engine.
  • Engine Efficiency: Dissolves gum and varnish from the fuel system, helping rough running engines operate smoothly.
  • Rust Protection: Fights rust and corrosion in the fuel system, providing long-lasting protection against moisture and ethanol damage.
  • Water Removal: Eliminates water from the marine fuel system by penetrating deep into the fuel line, suitable for all watersport engines.
  • Usage Instructions: Use 1 oz. per 2.5 gallons of fuel, pour directly into the fuel tank, and run the engine for 15 minutes for best results.
  • Extended Shelf Life: All STA-BIL products are effective for up to 2 years after opening; mark the opening date on the bottle.
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Current price is $11.9774.8 ¢/fl oz
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4.3 out of 5 stars
stars7 ratings3 reviews
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Showing 1-3 of 3 reviews

Jan 16, 2026
WalmartCustomer
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Multipack quantity: 1
5 out of 5 stars review

Verified Purchase

Good product and good price

Incentivized Review
Helpful?6M27K0P8D2035038200948
Mar 13, 2026
chawbert
Item details
Multipack quantity: 1
4 out of 5 stars review

Verified Purchase

Helped hard starting

I used this on my lawn tractor in the winter while using the snowblower attachment to plow snow. The tractor has sat for months before using it and after changing the fuel filter and new gas it was still hard to start and rough running until it warmed up. After dropping a capful in the tank and letting it run for a few minutes it started easier and ran better for the next 5 storms. I ended up using another capful in a full tank and it's running a little better and easier to start.

Helpful?6M27K0P8D2035038200948
Mar 29, 2025
austin
Item details
Multipack quantity: 1
2 out of 5 stars review

Verified Purchase

Busted up

Top was busted up when I opened the box

Helpful?6M27K0P8D2035038200948
reply from Gold Eagle Product Expert

We are disappointed to hear of this experience. Please feel free to contact Gold Eagle, the manufacturer, for assistance. We appreciate your feedback!