2-stroke engines are designed to have the oil mixed with the fuel - they burn it as part of operation. It makes them pretty terrible from an emissions standpoi

2-stroke engines are designed to have the oil mixed with the fuel - they burn it as part of operation. It makes them pretty terrible from an emissions standpoint. See: https://en.wikipedia.org/wiki/Two-stroke_engine#Lubrication https://en.wikipedia.org/wiki/Two-stroke_engine#Lubrication