its stamped on the case in ml by the fill hole
2001 cr250 oil capacity
lots
It will take a little more then 3/4 of a quart of oil..
.66 US quarts 10/w/40
Fork oil level 105mm is standard (or 19.4 oz or 572 cc)
Any JASO-MA or MA2 approved oil, weight 15-40 W.
850cc
I have a 1998 CR250 and i mix it 32:1
60ml
660 cm2
About 650 ml.
32 to one