It's a two stroke
PW 80 is a 2 stroke. It does not have oil in the crank case. I think you mean transmission oil. I use 10w40 engine oil in mine and it works great.
pee wee
no
Bp6hs
40.
Your engine is shot. Rings or valves, probably both, are shot.
10w-30 engine oil preferably motorcycle type oil for wet clutch.
PW-80cc 2 stroke single cyl.kids dirt bike.
resistance slows it down
around 85km/h
The 3-speed gearbox features an automatic clutch.