It depends on what you SHOULD have put in and what you DID put in and the age of the engine. Most of the time it won't make much difference.
don't try it
If you use the wrong weight motor oil in an engine, it is possible that you could destroy the engine due to lack of lubrication, either because the oil's viscosity is to low to provide adequate bearing separation, or because the oil's viscosity is to high to permit adequate lubrication. Use the manufacturer's recommended oil.
Yes, they are the same. Some people call an automobile engine a motor and some people call it an engine. It is actually an engine and a motor is a electrical device. But motor oil and engine oil for all practical purposes are the same thing.
It may need oil? Or motor needs rebuilt.
no
because it is only called motor oil by morons who don't know the true difference between a motor and a engine your right it should never be called motor oil unless it is a dc motor that has oil in it but for a engine ran auto it is engine oil
Have someone drain out the oil and replace the filter, now! Do not run the engine! This is not good for the engine!
Motor oil
Several things can happen: 1) If using frenchfry oil, wildlife will be attracted to your machine. 2) Oil of Olay will make your hands soft and desirable come oil change time. or 3)It being "wrong", implies not being a good lubricant for the motor which will mean destruction of the motor due to internal wear and heat buildup.
No. It will ruin an engine. The above answer is 100% wrong. You can mix convention oil with synthetic and it will do no harm at all. When you see them selling Synthetic blend that is what you are buying. A blend of synthetic and conventional oil.
Most likely a head gasket or intake is either in wrong or the wrong one. Doesnt' matter if you rebuilt, or bought new, mistakes happen.
If it is a 4-cycle engine you definitely need motor oil. If its a 2-cycle engine then the oil is mixed with the gas. If its a reel mower then no oil is needed except for external lubrication. Depending on the engine manufacturer the 4-cycle engines will require either SAE30 or 10w30 motor oil.