Honda GOLDWING GL1800/A 2015 Owner's Manual page 179

Engine Oil & Filter
Oil Recommendation
API classification
viscosity (weight)
JASO T 903 standard
suggested oil*
* Suggested oils are equal in performance to SJ oils that are not labeled as
energy conserving or resource conserving on the circular API service label.
• Your motorcycle does not need oil additives. Use the recommended oil.
• Do not use oils with graphite or molybdenum additives. They may adversely
affect clutch operation.
• Do not use API SH or higher oils displaying a circular API ''energy
conserving'' or ''resource conserving'' service label on the container. They
may affect lubrication and clutch performance.
NOT RECOMMENDED
• Do not use non-detergent, vegetable, or castor based racing oils.
176
Servicing Your Honda
SG or higher except oils labeled as energy
conserving or resource conserving on the
circular API service label
SAE 10W-30
MA
Pro Honda GN4 4-stroke oil (USA &
Canada), or Honda 4-stroke oil, or an
equivalent motorcycle oil.
OK