Stihl 0781-313-8014 HP Ultra 2 Cycle Engine Oil - 1 Gallon Jug (128 ounces)

What It Is

Stihl HP Ultra 2 Cycle Engine Oil is a high-performance, synthetic-blend lubricant specifically formulated for Stihl-brand 2-cycle engines, including chainsaws, trimmers, blowers, and hedge cutters. The 1-gallon jug (128 oz) is designed for heavy users who mix large batches of fuel.

Fitment & Compatibility

• Brand fit: OEM Stihl oil; works best in Stihl 2-cycle equipment but is compatible with any air-cooled 2-cycle engine (e.g., Husqvarna, Echo, Ryobi) that requires a 50:1 mix ratio.
• Mix ratio: Requires 50:1 (2.6 oz oil per 1 gallon of gasoline). Do not use in 4-cycle engines or in 2-cycle engines requiring a different ratio (e.g., 40:1 or 32:1).
• Fuel type: Mix with unleaded gasoline up to 10% ethanol (E10). Avoid E15 or higher ethanol blends.
• Measurement: 128 oz treats up to 50 gallons of fuel. No additional measurements needed—just use the included mixing bottle or a graduated cylinder.

Key Things to Know

• Quality: Synthetic blend reduces engine deposits, smoke, and spark plug fouling compared to generic or mineral oils. Meets JASO FD and ISO-L-EGD standards for high-performance 2-stroke engines.
• Installation difficulty: Easy—just measure and pour into a clean fuel can, then add gasoline. Shake well before use. No tools required.
• Common gotchas: Do not mix with other oils or pre-mixed fuel. Shelf life is about 3 years unopened; once mixed, use within 30 days. The jug has no pour spout—buy a separate funnel or transfer pump.
• Storage: Keep sealed and away from extreme heat/freezing. Opened oil can degrade if exposed to air for long periods.

Should You Buy It

If you own multiple Stihl 2-cycle tools or use one heavily (e.g., daily landscaping), this gallon jug saves money per ounce compared to quart bottles and ensures consistent, high-performance lubrication. For occasional users or those with a single small tool, a quart or pre-mixed fuel is more practical to avoid waste.