KTM 690 Owner's Manual page 102

STANDARDS
STANDARDS 22
JASO T903 MA
Different technical development directions required a new specification for 4-stroke motorcycles – the JASO T903 MA
Standard.Earlier, 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 and ATV engines.With most motorcycles and ATVs, the gearbox and the clutch are lubricated with
the same 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 vis-
cosity. The viscosity describes only one property of oil and says nothing about quality.
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