Honda TRX90X Owner's Manual page 120

14 TRX90X-32HP26700.book 111 ページ ２０１３年８月５日 月曜日 午後２時２０分
Other viscosities shown in the following chart may be used when the
average temperature in your riding area is within the indicated
range.
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.
(1) oil code
(2) oil classification
Engine Oil
(1)
(2)
Servicing Your Honda
111