Gasoline marine fuel-system cleaning task
Measure for the actual fuel volume
Product code 22313 | Store SKU 103884
This listing is an 8 oz Marine Tune-Up treatment, code 22313. At the published rate, calculated total-package capacity is 20 US gallons of gasoline across correctly measured treatment events. A rough-running gasoline marine engine can have several possible causes. This Marine Tune-Up fuel treatment is intended for the manufacturer-documented carburetor and injector cleaning task, including gum and varnish deposits. It is a tank-added treatment rather than a carburetor-cleaning aerosol.
Match the product to the fuel and engine requirements before use. The treatment is described for gasoline-powered marine equipment, including suitable boats and personal watercraft. It does not convert an unapproved gasoline blend into acceptable engine fuel or repair every mechanical, ignition or fuel-delivery fault.
Measure for the actual amount of gasoline being treated and follow the supplied label. Treatment capacity is a package calculation, not an instruction to add an entire bottle regardless of tank volume. Follow the vessel’s refueling procedure and the engine’s cooling and operating requirements during the directed run period.
Compare this tune-up task with routine marine fuel treatment when deciding what to purchase. A routine every-fill-up product and a targeted cleaning treatment have different positioning and directions. Choose the documented task and investigate symptoms that remain rather than making a guaranteed performance claim.
Clear Product Details
Review the 16 oz gel format, specifications and application directions.
Surface Guidance
Check fiberglass, gelcoat and finish suitability before use.
Product Support
Ask about your surface and stain type before ordering.
Shipping & Returns
Review shipping information and return conditions before purchase.
FUEL & ENGINE CARE GUIDE
Plan the Correct Marine Tune-Up Fuel Treatment Task
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Confirm Fuel and Engine
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Measure the Dose
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Refuel as Directed
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Operate Under Approved Conditions
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Reassess Persistent Problems
Compare the Formula, Package and Maintenance Task
Fuel Treatment & Engine Care Selection Guides
What Customers Say
Restored my rough-running outboard quickly
Ordered the STA-BIL Marine Tune-Up and shipping was fast with secure packaging. Poured the correct amount into the tank, topped off with fresh fuel, and ran the engine for 15 minutes. Cleaned carbs and injectors, dissolved gum and varnish, and smoothed out the rough idle. Excellent performance and good value for a full tune-up treatment.
Fixed hesitation on my jet ski
Bought the STA-BIL Marine Tune-Up and received prompt delivery. Followed the directions exactly—treated 20 gallons and ran the engine. Quickly resolved rough running caused by ethanol and neglected fuel. Carbs and injectors are cleaner and throttle response is back. Reliable product and solid value for seasonal tune-ups.
Helped clean up a neglected fuel system
The STA-BIL Marine Tune-Up dissolved gum and varnish and improved running on my small boat. Arrived on time and was easy to apply at the recommended ratio. Four stars only because one bottle treats just 20 gallons, so larger tanks need more, but overall performance and service were good.
Quick fix for rough-running marine engines
Purchased the STA-BIL Marine Tune-Up and shipping was quick and careful. Simple pour-in treatment restored lost performance on my PWC after a season of sitting. Dissolved deposits, cleaned injectors, and the engine now runs like it should. Highly recommend for mid-season tune-ups and value is solid.
Effective carb and injector cleaner for boats
Got the STA-BIL Marine Tune-Up. Delivery was efficient and product arrived ready to use. Correct application quickly resolved rough running caused by gum and varnish. Engine runs smoother and more responsively after one treatment. Dependable results and good value for keeping marine engines tuned throughout the season.
Frequently Asked Questions
Is this a tank additive or an aerosol?
It is a tank-added marine fuel treatment, not a carburetor-cleaning aerosol.
What fuel type is it intended for?
The manufacturer describes gasoline-powered marine equipment. Do not substitute it for diesel treatment.
What dose is specified?
The manufacturer specifies 1 US fl oz per 2.5 US gallons of gasoline.
What package is listed?
The store lists an 8 oz package, product code 22313.
How much fuel can the package treat?
An 8 US fl oz package at the published rate has a calculated total capacity of 20 US gallons.
Is an engine run directed afterward?
The manufacturer specifies 15 minutes. Follow the exact engine’s cooling, ventilation and operating requirements.
Will it fix every rough-running engine?
No blanket repair promise is made. Persistent symptoms require diagnosis.
Is the dose the same as routine Marine treatment?
No. Use this tune-up product’s directions rather than the routine Marine formula’s rate.
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