I am considering a purchase of a TGB Sunset 50 that currently does not run. After speaking with the current owner, apparently someone may have drained the oil tank (as a prank) and the scooter was ran without oil. Evidently, the rider did not see the oil light in the instrument cluster come on, if it came on, and kept riding the scoot. Considering this, what sort of damage to the engine might I be looking at repairing, worse case scenario? What sort of investigation could be done to possibly determine the extent of the damage. THANKS!