Honda NSS250A Owner's Manual page 103

Engine Oil & Strainer Screen
Oil Recommendation
API
classification
viscosity
(weight)
JASO T 903
standard
94
Servicing Your Honda
SG or higher
except oils
labeled as energy
conserving on the
circular API
service label
SAE 10W-40
MA or MB
＊
suggested oil
Pro Honda GN4, HP4 (without
molybdenum additives), or HP4M
(with molybdenum additives) 4-
stroke oil, or an equivalent
motorcycle oil.
＊ Suggested oils are equal in performance
to SJ oils that are not labeled as energy
conserving on the circular API service
label.