Honda SILVER WING FSC600D 2007 Owner's Manual page 118

Oil Recommendation
API SG or higher
classification except oils
labeled as energy
conserving on the
circular API
service label
viscosity SAE 10W-30
(weight)
MA
JASO T 903
standard
Engine Oil, Filter & Strainer Screen
suggested oil
Pro Honda GN4 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.
Servicing Your Honda
109