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JASO M341 Detergency Test

Engine Tests

Test Method Summary
The JASO M341 specification test evaluates the piston ring sticking tendencies and engine cleanliness, at high temperatures, of lubricating oil used in 2-stroke gasoline engines, such as motorcycle engines, utility engines and outboard engines.

Test Engine
Honda AF27 (SK50MM)
Test Fuel
Mixed fuel with a mixing ratio of 100:1
Test conditions
6000 rpm, full load for 1 hour.
Test order : The test is performed in the following order the standard reference oil, a candidate oil - on the same day in order to prevent errors from environmental factors, such as, atmospheric change etc..
Evaluating method
Detergency is evaluated by the JPI-5S-34-91 method
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