Ace 10W-30 4-Cycle Lawn Mower Motor Oil 48 oz 1 pk, Pack of 6

10W30 is a common motor oil grade suitable for many lawn mowers. Your owner’s manual will tell you the exact grade required, but in almost all cases 10W30 is the right stuff for a four-stroke engines. Any brand of oil that’s suitable for cars or trucks will work fine in your mower.