Honda 2004 XR400R Owner's Manual page 74

For normal air temperatures. Use SAE
10W-40 when the outside temperature is
below 0°C (32°F). See next page for
additional temperature/viscosity information.
Suggested oils are equal in performance to
SJ oils that are not labeled as energy
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'' 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.
Servicing Your Honda
Engine Oil
OK
65