Briggs & Stratton 100036 2-Cycle Engine Oil (16 oz.)

What It Is

This is a 16-ounce bottle of Briggs & Stratton 100036 2-Cycle Engine Oil, a pre-mixed, ashless formula designed for small engines that require a 50:1 fuel-to-oil ratio. It’s intended for use in 2-cycle lawn mowers, trimmers, chainsaws, leaf blowers, and other outdoor power equipment.

Fitment & Compatibility

Before buying, confirm your engine is 2-cycle (not 4-cycle) and requires a 50:1 mix—check your owner’s manual or the oil fill cap for the ratio. This oil is OEM-specified for Briggs & Stratton 2-cycle engines, but it’s also compatible with many other brands (e.g., Troy-Bilt, Craftsman, Husqvarna) that call for 50:1. Do not use in 4-cycle engines or equipment that specifies a different ratio (e.g., 40:1 or 32:1). No deck size or model number checks needed—this is a universal lubricant, not a part with physical dimensions.

Key Things to Know

• Quality: Ashless formula reduces spark plug fouling and exhaust port deposits, extending engine life. Meets NMMA TC-W3 and API TC standards.
• Installation difficulty: Trivial—just pour the entire 16 oz. bottle into 1 gallon of unleaded gasoline, shake, and use immediately. No measuring required.
• Common gotcha: Do not mix with other oils or use in engines requiring a different ratio. Shake the fuel can before each use to keep the oil suspended.
• Storage: Keep sealed in a cool, dry place. Once mixed, use the fuel within 30 days to avoid gumming.

Should You Buy It

If you own a 2-cycle small engine that needs a 50:1 mix and want a no-measure, OEM-recommended oil that’s proven reliable (4.7 stars across nearly 9,000 reviews), this is a solid, hassle-free choice. It’s especially good for casual users who want to avoid mixing errors. If your engine requires a different ratio or you prefer a synthetic blend for extreme conditions, look elsewhere.