What is the best oil you can buy for your lawn mower engine? Jul 23, 2019Lawn Care Professionals Are Protected As Well. You can rest assured your engines are protected even during periods of extended use when there’s no time for a Lawn mower oil change. It’s built to solve the problems that plague small engines, including wear, power loss, oil consumption, stuck rings and valves, and harmful carbon deposits. 12 Common Problems of Lawn Mower - How to Fix - Cut Grass Jan 19, 20221. Loss of power while mowing. When a lawnmower produces a set of splitting sounds while in use, then this is a signal that the engine is about to stop. A dirty filter is one of the causes of power loss. Here you need to go through the manufacturer’s manual to find out where the filter is.