Can you use lawn mower 2 cycle engine oil 50 to 1 in boat motors?

Yes, all two stroke oil can be used in any two stroke engine. It is cheaper to buy it in a gallon jug from the auto parts store than to use the little cans of lawn mower oil.

NO... as there is a difference between air cooled 2 stroke oil and water cooled oil, Most makes of air cooled oil usually have a warning on it stating noyt for use in water cooled engines.