Briggs and Stratton of Genuine OEM Replacement Oil №100005 - 2 Pack

What It Is

This is a 2-pack of Briggs & Stratton Genuine OEM SAE 30 oil (part #100005) designed for 4-cycle lawn mower engines. It’s pre-measured for quick top-offs or oil changes in push mowers, riders, and zero-turns.

Fitment & Compatibility

• Engine brand: Briggs & Stratton 4-cycle engines only (not for 2-stroke or other brands).
• Oil type: SAE 30 – use in warm weather (above 40°F). Not for snow blowers or cold-weather operation.
• Capacity: Each bottle holds 18 oz. Most push mowers need 15–20 oz; check your owner’s manual for exact capacity.
• OEM vs aftermarket: This is genuine Briggs oil. Aftermarket SAE 30 will work, but OEM ensures correct viscosity and additives for Briggs engines.
• Measurements: Bottle size is fixed – no mixing or measuring required. Just pour in.

Key Things to Know

• No mixing: SAE 30 is straight-weight, not multi-viscosity. Don’t mix with 10W-30.
• Installation difficulty: Easy – unscrew oil cap, pour, check dipstick. No tools needed.
• Common gotchas: Overfilling can cause leaks or smoke. Always check oil level on level ground with engine cold.
• Shelf life: Unopened bottles last 3–5 years if stored in a cool, dry place. Opened bottles should be used within 1 year.

Should You Buy It

If you own a Briggs & Stratton mower and want a no-measure, no-mix oil change, this 2-pack is a solid buy. It’s simple, OEM-correct, and backed by high ratings. Skip it if you use synthetic or have a cold-climate mower – that needs 5W-30 or 10W-30.