If one looks at the specific operational characteristics and performance challenges for lubricants posed by hybrids the most logical place to incorporate hybrid-specific lubricant requirements is in gasoline-specific specifications. The obvious opportunity is to add this to ILSAC GF-7, via a couple of small additions to the requirements that could be easily and quickly incorporated and not further delay the implementation of the GF-7 specification. In addition to GF-7 other opportunities would be in other “next generation” specifications such as API or JASO. These specifications all have global reach and applicability, build from a foundation of strength and credibility and would address the breadth of performance needs.
Absolutely yes! The growth of EV is evident, but there is still a vast majority of vehicles (both new and in the current car park) that are ICE-powered. This will not drastically change over the lifetime of ILSAC GF-7. Meanwhile the OEMs have a clear and immediate need to deliver improved FE from ICE-powered vehicles. So updated, improved and timely specification developments such as GF-7 in 2025 are critical to enabling this and delivering meaningful fuel economy (FE) and performance benefits in parallel to whatever is happening in terms of EV growth.
The way I rationalise this is that the GF-7 improvement of 0.5% is ONLY associated with the engine oil contribution, and is an artefact of the test that is measuring it (the Seq VIE).
The CAFE requirement is more encompassing and can benefit from efficiencies beyond the EO only. Also the testing methodology is more of a direct measure of the benefit.
Thanks for the question, below actions from Lubrizol helps to move to lower viscosity MCO for efficiency, let us know if you have further questions on this:
There are already high quality MWFs. New and different materials used in EV production may require MWF to look at new or different chemistries for the formula's.
Although it depends on how to drive, it seems that sump tempereture is under 80? on average.
Toyota gurantees units and fluid endurance with a safty factor.