Two Cycle Gasoline Engine Oil
Amendment and addition to the Application Manual


Announcement on the revision of a part about " TWO CYCLE GASOLINE ENGINE OIL PERFORMANCE CLASSIFICATION (JASO M345) IMPLEMENTATION MANUAL"(2019.04)

We would like to inform you that the JASO engine oil standard implementation panel revised the on-file standard implementation manual.

The test number of the test method(ASTM) was changed as follows.
-Elemental analysis-
(Ca-P):
 ASTM D 4951 → ASTM D 4951 or D5185
(Sulfur) :
 ASTM D 2622 or ASTM D 5185 → ASTM D 2622 or D4951 or D 5185

Concerning details, please confirm a revision manual(2T_EV1904.pdf).



Announcement on the revision of a part about " TWO CYCLE GASOLINE ENGINE OIL PERFORMANCE CLASSIFICATION (JASO M345) IMPLEMENTATION MANUAL"(2018.12)

We would like to inform you that the JASO engine oil standard implementation panel revised the on-file standard implementation manual.

The points of the revision are as follows.
(1) Taking over of the company code by a merger or brand succession will be accepted.
(2) The test number of the test method(ASTM, JIS and JPI) was adjusted with the newest standard.
Density (15℃):
 JIS K 2249 → JIS K 2249-1 or JIS K 2249-2
 ASTM D1298 → ASTM D1298 or ASTM D4052
Flash point:
 JIS K 2265 → JIS K 2265-3 or JIS K 2265-4
Carbon residue :
 JIS K 2270 → JIS K 2270-1 or JIS K 2270-2
 ASTM D 189 → ASTM D 189 or ASTM D 4530
Elemental analysis
(Ca-P):
 JPI-5S-38-92 → JPI-5S-38
 ASTM D 4951 → ASTM D 5185
(Nitrogen) :
 JIS K 2609-1990 → JIS K 2609
(Sulfur) :
 JIS K 2541-1992 → JPI-5S-38 or JIS K 2541-5 or JIS K 2541-7
 ASTM D 2622 → ASTM D 2622 or ASTM D 5185

Concerning details, please confirm a revision manual(2T_EV1812.pdf).





Some part of the Application Manual was revised in December 2004.

Concerning details, please confirm a revision manual (2T_EV0412.pdf ).



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