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Still no definite timeline for first licensing of ILSAC GF-6

The Joint Auto-Oil Advisory Panel (AOAP), which met last week in Dearborn, Mich., U.S.A., has agreed not to release timelines for ILSAC GF-6 until test development is complete, according to Scott Lindholm who is co-chair of AOAP.

โ€œWe are nearly there, with only the Chain Wear and the Sequence IVB needing completion,โ€ he said.

A more definitive timeline for the first licensing date of ILSAC GF-6, the next specification for passenger car motor oils (PCMO) being developed in the U.S. and Japan, was expected to be determined at last weekโ€™s meeting.

While most of the engine tests have completed their precision matrices, a requirement before each test is accepted as an ASTM test method, the precision matrix for the Sequence IVB engine valve train wear test has run into trouble.

โ€œThe report from the Sequence IVB Surveillance Panel indicated that their work will take them perhaps to January 2018 and Chain Wear may be approved in the next few months,โ€ said Lindholm, who is global product application specialist for Shell Global Solutions.

โ€œTimeline deadlines and options are being discussed but will firm up when all the tests are in hand,โ€ he added.

The precision matrix for the Sequence IVB, a replacement test platform for the existing ASTM D6891 Sequence IVA, has been abandoned due to several concerns and a new round of precision matrix is planned to start in August. The Sequence IVB is a low-temperature cyclic test, with a total running duration of 200 hours. The Sequence IVB uses a Toyota 2NR-FE water-cooled, 4-cycle, in-line cylinder, 1.5-litre engine as the test apparatus.

Ford Motor Co. developed the chain wear test in a 2.0 L I-4 EcoBoost GDI-T engine to ensure that ILSAC GF-6 engine oils can meet the timing chain durability requirements in gasoline direct injection (GDI) and turbocharged (GDI-T) engines. Statisticians working on the precision matrix had recommended running 10 additional tests post-matrix. The additional tests have been completed. Statistical analysis and LTMS are pending completion of the operational review of the additional tests.