That depends on your moped. Most mopeds madein the 80's are two stroke engines. Which do not use oil in the crank case. the oil is mixed in with the fuel.
usually about 1.5
First of all you put the fuel in the moped as per requirement, hide the keys, and the last option is leak Tyre tube.
If it is getting fuel try installing a new spark plug.
That is a matter of personal opinion and is also influenced to some extent on the use you intend for it. If you like to go off road then a Trails or Enduro Moped would be best. If you care more about speed then a Sports moped would suit you best and for economy a commuter moped or scooter.
Driving a moped is like driving a car. You have to have a licences to drive a moped.
WHere can I find out how to put a moped enginge and all on a 50 cc moped?
Most use a small 12 volt battery.
a moped license
Johnny Moped was created in 1976.
how to find out if moped is stolen
There's no such thing as a 250cc moped. A moped is a 50cc scooter with a top speed of 30mph restricted.