The request was sent to the co-chairs of the Auto/Oil Advisory Panel (AOAP) and the chair of the API Lubricants Standards Group. The AOAP will begin the evaluation process of the specification, expected to be called ILSAC GF-7, which would replace the current GF-6 specification. The request states a desired first-licensing date from API of no later than the end of Q2 2028, the organization said.
The new specification is being requested with the following improvements, according to the ILSAC:
- Replacement Sequence V & VI engine tests
- The Sequence V sludge test has been using the same engine since GF-4. The engine components are in short supply, and there is a need to update the test procedure to better reflect current engine platforms. The Sequence VIE/F Fuel Economy tests also require an updated engine platform.
- Improvement to Sequence IIIH – Oxidation and deposits test
- Increased oxidation protection
- Resolution of Sequence VIII – Corrosion test
- Evaluate the test for possible removal
- Review of Sequence IX – Low-speed pre-ignition (LSPI) test
- Review due to potential end of component life
- Introduce a stand-alone Aged Oil LSPI Test to ensure mitigation of pre-ignition throughout the drain interval
- Review of Sequence X – Chain wear test
- Review due to potential end of component life
- Seal Test changes
- Keep/replace/add new seals
- New/modified Bench Tests
- NOACK Volatility (ASTM D5800)
- Oil gelation/filterability (ASTM D6795)
- Sulphated Ash (ASTM D129 (was D874))
According to the organizations, goals for the new specification, include:
- Maintain backwards compatibility
- Evaluate ethanol fuel impact on tests
- Inclusion of 0W-12/0W-8 Low Viscosity Oils-(0W-12/0W-8)
- Protect for future EPA/CARB requirements