The 80cc engines are water cooled and not air cooled, correct? Is this why people say not to use marine oil because that is for air cooled engines? Or is it the other way around
I understand what your asking
2 stroke water cooled engines use an oil that's formulated for cooler operating temperatures
2 stroke air cooled engines use an oil that's formulated for hotter operating temperatures
If ya ever had an air cooled 2 stroke engine failure while using Marine oil
I bet you'll never use it again in your air cooled 2 stroke