STIHL 0781 313 8007 5.2 Ounce High Performance Ultra 2 Cycle Engine Oil, 6 Pack

What It Is

This is a 6-pack of STIHL’s Ultra 2-cycle engine oil (5.2 oz bottles, part 0781 313 8007) specifically formulated for air-cooled, high-performance STIHL handheld equipment—chainsaws, trimmers, blowers, and hedge cutters. It’s pre-measured for easy mixing with 1 gallon of unleaded gasoline to achieve a 50:1 ratio.

Fitment & Compatibility

• Engine type: Only for 2-cycle (air-cooled) engines. Not for 4-cycle or outboard motors.
• Brand fitment: Designed for STIHL equipment, but works with any brand that requires a 50:1 mix (e.g., Husqvarna, Echo, Ryobi) as long as the engine is air-cooled.
• Mixing ratio: 1 bottle (5.2 oz) per 1 gallon of 89+ octane unleaded gasoline. Do not use ethanol blends above E10.
• OEM vs aftermarket: This is genuine STIHL oil—no cross-reference needed. Avoid generic “universal” oils that lack the same detergent and stabilizer package.
• Check before buying: Confirm your equipment’s owner manual specifies 50:1. If your engine calls for 40:1 or 32:1, this oil is not correct (it’s too lean).

Key Things to Know

• Quality: STIHL Ultra is a synthetic-blend oil with high detergency and low ash. It reduces carbon buildup and extends spark plug and muffler life compared to cheap mineral oils.
• Installation difficulty: Trivial—just pour the entire bottle into an empty 1-gallon gas can, then add fuel and shake. No measuring needed.
• Common gotchas:
  • Do not pre-mix in the tool’s fuel tank; always mix in a clean, approved container.
  • If you store mixed gas longer than 30 days, add a fuel stabilizer (STIHL MotoMix or similar is pre-stabilized).
  • Using this oil in a 40:1 engine will cause lean running and potential seizure—double-check your ratio.
• Shelf life: Unopened bottles last 3–5 years if stored in a cool, dry place. Opened bottles should be used within a year.

Should You Buy It

If you own STIHL 2-cycle equipment (or any 50:1 air-cooled engine) and want reliable, low-smoke, high-lubrication performance, this 6-pack is a solid value. It’s ideal for frequent users who want consistent mix quality without measuring errors. Skip it if your engine requires a different ratio or if you only need a single bottle—buy the individual 5.2 oz or 2.6 oz instead.