A push mower typically takes small engine oil, with the most common and recommended types being:
- SAE 30 : Best for warmer temperatures above 40°F (5°C), widely used for small engines like push mowers.
- SAE 10W-30 : Suitable for a wider temperature range (0 to 100°F or -18 to 38°C), improves cold weather starting but may increase oil consumption at higher temperatures.
- Synthetic oils such as SAE 5W-30 or 15W-50 : Provide better protection across all temperatures, improved starting, and less oil consumption; synthetic oils are acceptable for all temperature ranges and do not change oil change intervals.
For most push mowers with four-stroke engines, use a high-quality detergent oil classified as "For Service SF, SG, SH, SJ" or higher, without special additives
. Oil capacity for push (walk-behind) mowers is typically around 15 to 18 ounces, and the oil should be changed every 50 hours of use or annually, whichever comes first
. If your mower has a two-stroke engine, the oil is mixed with gasoline in a specific ratio, and a special two-stroke oil is required
. In summary, for a standard push mower with a four-stroke engine, SAE 30 motor oil is the most common choice, with synthetic options available for better performance across temperatures. Always check your mower’s owner manual for the exact oil type and capacity recommendations.
