Test Method Summary
The JASO M336:1998 specification test evaluates the detergency of automobile
diesel engine oils at high temperature and high load.
Test
engine
TD25 diesel engine
manufactured by Nissan Diesel
Test
Fuel
Class 2 light gas oil, as specified by
JIS K 2202.
Test
conditions
An engine is tested at speed of 4,300
rpm under full load (temperatures and pressures are also
specified).
Test
duration
200 hours
Measuring
items
Includes following evaluation,
pistons / sludge rating / wear amount of piston rings
and metals, oil rings, cam-shaft and cylinder liners
/ used oil analysis
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