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52 Servicing Your Honda
* Suggested 4-stroke engine oils are equal
performance to SJ oils that are not labeled as
energy conserving and resource conserving on
the circular API service label.
• Your CRF 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 4-stroke engine
oils displaying the circular API “energy
conserving” and “resource conserving” service
label on the container. They may affect
lubrication and clutch performance.
Transmission Oil
Other viscosities shown in the following chart
may be used when the average temperature in
your riding area is within the indicated range.
API classification
(4-stroke engine oil
only)
Viscosity
(weight)
JASO T903
standard
others
suggested oil*
SAE 10W–30
MA
without friction modifiers as
molybdenum additives
Pro Honda GN4 4-stroke oil
(USA & Canada), or Honda
4-stroke oil or an equivalent
motorcycle oil*
SG or higher except oils
labeled as energy conserving
and resource conserving on
the circular API service label
JASO T 903 standard
The JASO T 903 standard is an index for engine
oils for 4-stroke motorcycle engines.
There are two classes: MA and MB.
Oil conforming to the standard is labeled on the
oil container. For example, the following label
shows the MA classification.
Refer to
Safety Precautions on page 23.
Using the proper oil, and regularly checking,
adding, and changing oil will help extend the
service life of the transmission and clutch. Even
the best oil wears out. Changing oil helps get rid
of dirt and deposits. Operating the engine with
old or dirty oil can damage your engine.
Running the engine with insufficient oil can
cause serious damage to the engine and
transmission.
Oil Recommendation
(2)
(1)
(2)
(1) oil code
(2) oil classification
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