# STA-BIL Marine Tune-Up [22313]

**Marine Tune-Up**

When watersport engines are running rough, it’s time for STA-BIL® Marine Tune-Up. The easy-to-use additive pours directly into the fuel tank to address issues caused by ethanol-blended fuels or plain old, neglected fuel systems. One treatment is enough to restore lost engine performance in any gasoline-powered watercraft like jet skis, speed boats, and PWCs. Try it next time the engine seems to be running a bit rough, unlike you remember it.

**Formulated For**

Any gasoline-powered watercraft like jet skis, speed boats, and PWCs.

**Top Benefits:**

-   Easily cleans carbs and injectors
-   Treats 20 gallons of fuel
-   Quickly resolves rough-running engines
-   Dissolves gum and varnish build-up
-   Perfect for small boats and personal watercraft (PWCs)
-   Compatible with all gasoline marine engines
-   Great to use as a “tune-up” throughout boating season

**Directions for Use:**

-   Use 1oz of STA-BIL® Marine Tune-Up for every 2.5 gallons of fuel.
-   Once users measure out the correct ratio, pour STA-BIL® Marine Tune-Up directly into the gas tank of the marine vessel
-   After pouring in the additive, top off the gas tank with fresh fuel
-   Finally, start the engine and let it run for 15 minutes uninterrupted

**Specifications:**

-   Size: 8 oz

## Details

- **Price:** 12.99 USD
- **Type:** Fuel Treatments
- **Tags:** 1st Class Eligible, Brand_STA-BIL, Engine Parts & Service, Engine Parts & Service | Fuel Treatments

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 12.99 USD | In stock |

## Images

- STA-BIL Marine Tune-Up [22313] STA-BIL

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> Source: [Besafe1st](https://besafe1st.com/products/sta-bil-marine-tune-up-22313)
> Updated: 2026-05-21