Honda CRF70F 2004 Owner's Manual page 69

Engine Oil
Other viscosities shown in the following chart
may be used when the average temperature in
your riding area is within the indicated range.
60
Servicing Your Honda
JASO T 903 standard
The JASO T 903 standard is an index to choose
engine oils for 4-stroke motorcycle engines.
There are two classes: MA and MB.
Oil conforming to the standard has the
following classification on the oil container.
(1) code number of the sales company of the oil
(2) oil classification
(1)
(2)