The new valve train wear test has been established using new REOs and N04C engine which meets the latest Japanese emissions regulation. (2) The reference oils (Good REO: DV3, Border REO: DV4) were clearly discriminated. The new valve train wear test was developed to replace the old test. JASO On-file oils will not fail the new 2015 test method. (3) "11.3μm max." as the specification for tappet wear has been proposed.
展开▼
