Yamaha YFM250XR Manuel Du Propriétaire page 124

CAUTION:
_
G
In order to prevent clutch slippage (since
the engine oil also lubricates the clutch),
do not mix any chemical additives. Do not
use oils with a diesel specification of "CD"
or oils of a higher quality than specified. In
addition, do not use oils labeled "ENERGY
CONSERVING II" or higher.
G
Make sure that no foreign material enters
the crankcase.
_
Oil quantity:
Periodic oil change:
1.5 L
With oil filter element replacement:
1.6 L
Total amount:
1.8 L
5-15