Look at the engine on your lawn mower. If the engine has an oil filler tube or a "hole" with a cap on it where oil is added to the engine, it is a 4-cycle (4-stroke) engine. If there is no oil filler tube or place to add oil to the engine, then it is a 2-cycle (2-stroke) engine and the oil has to be added to the fuel.
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If its got a oil plug its a 4 cycle, 5w-30 motor oil
If it is a 4 cycle engine, yes, it does need oil. If it is a 2 cycle the oil is mixed with the gasoline.
4 cycle mower.... gas is separate from oil!
Most lawn mowers have 4-stroke gas engines. Some have 2-cycle, and if you are talking about riding mowers, some even have diesel.
Being that it has crank case oil it would be a 4 Cycle. Engines that you mix oil and gas are 2 cycle.
it all depends if it is a 2 stroke or a 4 stroke lawn mower
Briggs and Stratton 30W for 4 cycle engines.
A small push mower. A Lawn Boy Mower is best for hilly slopes because they don't have any oil in the bottom like a 4 stroke - the 4 strokes run out of oil if you run them on a hill, but the Lawn-Boys are 2 stroke.
It all depends on you. 4 cycle trimmers do not require mixing of oil and gas. The gas that you use for your lawn mower or tractor is the same gas for your trimmer. They also provide more torque than a 2 cycle trimmer. 2 cycle trimmers require mixing of fuel and gas and are generally lighter in weight than 4 cycle trimmers.
You will foul your spark plugs and probably ruin your lawn mower. Because that oil is not designed to mix with your fuel.