Yes, oil should be put in the crankcase on a 1989 Suzuki RM 250. The proper oil to use for this is a product made by Standard Oil called 80-90W Gear Oil.
800ml in the gear box.
Your 1988 Yamaha Virago 250 pours oil from the crankcase vent hose because of a disconnected crankcase vent line.
Its stamped on the Crankcase and its 850ML.
The crankcase takes 650ml of 10 w 40 oil.
the capacity of oil on a suzuki ozark is 3.5 quarts
4 quarts according to Suzuki shop for 1995 250 quadrunner
u want to uese a namebeand like moble 10w40 non sinthitict oil
It is the plug with the number 4 written on on the very bottom of the crankcase.
650 M OF OIL
650 ml oil is transmmission capacity
on flat ground balance the bike and check the little oil window usually on the right side of the bike on crankcase
crankcase oil is the oil in the engine .some call it crankcase oil some call it engine oil