Stens Shield 2 Cycle Engine Oil 770-264, Full Synthetic 2 Stroke Oil, Engine Oil for Outdoor Power Equipment, Twenty-Four 2.6 oz. Bottles/case, 1 Bottle Makes 1 Gallon of 50 to 1 Fuel Mix, Blue Oil

What It Is

This is a pre-measured, full synthetic 2-stroke engine oil designed for mixing gasoline at a 50:1 ratio. Each 2.6 oz. bottle treats 1 gallon of fuel, making it ideal for small engines in handheld outdoor power equipment like chainsaws, string trimmers, leaf blowers, and hedge trimmers.

Fitment & Compatibility

• Use only in 2-cycle engines (not 4-stroke). Check your equipment’s oil/fuel mix ratio—this is formulated for 50:1 (2.6 oz. per gallon). Do not use in engines requiring 40:1, 32:1, or other ratios.
• Brands: Compatible with Stihl, Husqvarna, Echo, Ryobi, Poulan, Troy-Bilt, and most other 2-stroke handheld equipment. Not for use in outboard motors or motorcycles.
• Pre-mix only: Add the entire bottle to 1 gallon of fresh, unleaded gasoline (87 octane or higher, no ethanol recommended). Shake well before use.
• No measurement needed: The bottle is pre-measured—no mixing cups or guesswork.

Key Things to Know

• Full synthetic formula reduces smoke, carbon buildup, and spark plug fouling compared to conventional 2-stroke oils. Good for high-RPM engines.
• Easy storage: Each bottle is sealed and shelf-stable for years if unopened. Keep in a cool, dry place away from direct sunlight.
• Common gotcha: Using this in a 4-cycle engine will cause severe damage. Double-check your engine type before mixing.
• Not for diesel: Do not mix with diesel fuel or add to diesel engines.

Should You Buy It

If you own multiple 2-stroke tools and want a convenient, no-measure solution that reduces engine deposits and smoke, this case of 24 bottles is a solid value. It’s especially good for occasional users who don’t want leftover mixed gas going stale. Avoid if you need a different mix ratio or have only a single 4-stroke machine.