Can You Put Car Oil In A 4 Stroke Lawn Mower?
Can You Put Car Oil In A 4 Stroke Lawn Mower? Can you put car oil in a 4 stroke lawn mower? Car oil ruins two-stroke engines but lubricates four-stroke engines just fine. If it is a premium oil such as SAE 30 or 10W-30 oil you can use car oil in your four-stroke mower.