Briggs and Stratton 100074 Pack of (3) 1-Quart 5W-30 Synthetic Oil

What It Is

This is a pack of three 1-quart bottles of Briggs & Stratton 5W-30 synthetic oil, designed for 4-cycle lawn mower engines. It’s the factory-recommended oil for most Briggs small engines used in walk-behind mowers, tractors, and zero-turn riders.

Fitment & Compatibility

• Engine type: Only for 4-cycle (4-stroke) engines. Do not use in 2-cycle or 2-stroke mix engines.
• Brand fit: Direct OEM replacement for Briggs & Stratton engines. Also compatible with many other small engines (Honda, Kohler, Kawasaki) that specify 5W-30 synthetic, but check your manual first.
• Volume: Each bottle is 1 quart (32 oz). Most walk-behind mowers take about 20 oz (0.6 qt), so one bottle covers one oil change with leftover. For larger engines (tractors, riders), you may need 1.5–2 quarts per change.
• What to check before buying: Confirm your engine’s oil capacity (look in the manual or under the oil cap). Also verify that your engine requires 5W-30 viscosity—some older or high-hour engines may recommend 10W-30 or SAE 30.

Key Things to Know

• Quality: Full synthetic, API service SN or higher. Provides better cold-start protection and high-temp stability than conventional oil.
• Installation difficulty: Easy—drain old oil, replace the plug, fill to the dipstick mark. No special tools needed.
• Common gotcha: This is not for 2-cycle or 2-stroke engines. Also, do not overfill—fill to the “full” line only, as overfilling can cause smoking or seal damage.
• Shelf life: Unopened bottles last 3–5 years. Once opened, use within 1 year.

Should You Buy It

Yes—if you own a Briggs & Stratton 4-cycle mower or any small engine that calls for 5W-30 synthetic. The three-pack is convenient for seasonal changes or multiple machines. Skip it if your engine requires a different viscosity (e.g., SAE 30 or 10W-30) or if you only need one quart.