Nothing will happen. The oil that is required for all automobiles today is 4 stroke oil. So you are using 4 stroke oil anytime you change the oil.
Nothing at all!
Same oil you put in a car. Just make sure to use the correct weight.
I'm not sure if you are talking about oil or the gas.In case of the gas -It will run. no side effects.
it will seize up
4 stroke oil
No you can not.
if your scooter has a engine oil dip stick then it is a four stroke. if it has a oil tank that you have to put oil in then it is 2 stroke.
Drain it out and replace with proper oil
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.
buy a fourstroke air cooled so it doesn't happen again
i just did that with my car Occidently and nothing happen so far, but i will recommend any one to do oil change as soon as possible ....
Very poor lubrication at startup.