Honda NPS50/S RUCKUS 2009 Owner's Manual page 94

Engine Oil & Strainer Screen
Oil Recommendation
API
classification
viscosity
(weight)
JASO T 903
standard
86
Servicing Your Honda
SG or higher
except oils
labeled as energy
conserving on the
circular API
service label
SAE 10W-30
MA
＊
suggested oil
Pro Honda GN4 4-stroke oil (USA
& Canada), or Honda 4-stroke oil
(Canada only), 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.