Only if it is a 2 cycle engine and you mix the oil with the gasoline. If it is a 4 cycle engine, then using 2 cycle oil will destroy the engine over time. Use SAE 10w30 synthetic oil in your air cooled 4 cycle engine.
Depends on the lawnmower. Some older lawn mowers used two-stroke engines, and you mixed the two-cycle oil with the gas. But 99% of modern lawnmowers use a four-stroke engine with a crankcase. So if the question is: "Can I use two-cycle oil in the crankcase?" the answer is an emphatic NO. It will likely destroy the engine.
You can cut down trees with your lawnmower. Warning: Do not actually try to cut down a tree with your lawnmower. More than likely, the gas in the chainsaw is mixed with 2-cycle oil. If your mower also has a 2-cycle engine, nothing will happen. If your mower has a 4-cycle engine, the engine will probably smoke (bluish in color) until the oil is burnt up during combustion. At worst, the oil in the 2-cycle oil/gas mixture will foul up the spark plug and you will probably have to clean it pretty often until the oil is burnt up.
If you have to add oil to the fuel, it is a 2-cycle engine. If you have to add oil through a filler spout into the crankcase, it is a 4-cycle engine.
You can not use 4-cycle oil in a 2-cycle engine because the four cycle oil will not mix it is not designed to.Two cycle oil is designed to mix with fule to lube the two cycle parts in your motor.
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 you want to destroy that engine over time which is what will happen if you use 2 cycle oil. Use only SAE 10w30 synthetic oil any major brand.
Yes, It will probably smoke due to the extra oil that is burning but will will work in a pinch. Not recommended for extended use.
No - it is formulated very differently. The crankcase of a four stroke engine needs conventional engine oil. DO NOT use two stroke oil in the crankcase.
A four cycle engine does not use a gas/oil mixture. The oil is in the crankcase and the gas goes in the gas tank. If you put oil in the gas on a 4 cycle engine it will run poorly and smoke a lot.
Not really sure what you're getting at. If your lawnmower engine is a 2-stroke then you need a mixture of oil and gas to run it.
Two-cycle lawnmower engines are rare.