Yes, If the mower has a 4 cycle engine, which is almost 100% of the mowers sold today it would be the case. I know of no 2 cycle tractor mowers being built in the last 25 years. But is is possible. Most mowers use SAE 10w30 oil.
Use regular unleaded gasoline, and mix it with four ounces of oil per gallon of gas - BUT, how you use it depends on whether your lawn mower has a 2-stroke or 4-stroke engine. A 2-stroke engine requires 2-cycle oil to be added to the gasoline in a certain ratio. 4-stroke engines do not require the gas/oil mixture.
If it is a 2-stroke engine, the oil/gas mixture has too much oil. If it is a 4-stroke engine, the oil sump is overfull.
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.
If it is a 2-stroke engine, 2-cycle engine oil is added to the gasoline. If the engine is 4-stroke, regular 30W motor oil is used. To tell if your engine is 2-stroke or 4-stroke, look for a spout where oil is poured into the engine. If there is no spout, then the engine is 2-stroke and 2-cycle oil must be added to the gasoline.
blew engine cause of low oil.... junk the mower engine & replace or pitch the whole mower... your choice
A gas only engine has a spout where oil is added to the engine. If there is no spout, then it is a gas/oil engine. FYI - gas only engine is a four-stroke (four-cycle) engine and the gas/oil engine is two-stroke (two-cycle).
Only if it is a two-stroke (two-cycle) engine.
Four-stroke engines have a spout where you add oil to the engine. On two-stroke engines, oil has to be added to the fuel. (Four-stroke and two-stroke are also called four-cycle and two-cycle, respectively).
Either it is a 2 stroke(in which it's normal), or if it's a 4 stroke it has worn rings and is burning oil
Lawn mowers can take 2 stroke or 4 stroke oil depending on the type of engine. If unsure contact your lawn mower provider.
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Briggs and Stratton made almost exclusively four stroke engines. There is no fuel oil mixture for a four stroke engine. Are you sure you have a two stroke engine by Briggs and Stratto? rhg