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STANDARDS
JASO T903 MA
Different technical development directions required a new specification for 4-stroke motorcycles
lier, engine oils from the automobile industry were used for 4-stroke motorcycles because there was no separate motorcycle specification.
Whereas long service intervals are demanded for automobile engines, high performance at high engine speeds are in the foreground for
motorcycle engines. With most motorcycles, the gearbox and the clutch are lubricated with the oil as the engine. The JASO MA Standard
meets these special requirements.
SAE
The SAE viscosity classes were defined by the Society of Automotive Engineers and are used for classifying oils according to their viscos-
ity. The viscosity describes only one property of oil and says nothing about quality.
the JASO T903 MA Standard. Ear-
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