Originally Posted by SR5
For SP & GF-6 I would like to see Noack volatility
This one change should force the use of better base stock and an overall better formulated product.
I seem to recall the reason for DEXOS is from GM's point of view their request for higher performance would be approved by ISLAC but the implementation would take years. So I would not be surprised if ISLAC GF-6 mirrors D1G2 with a few exceptions.
Also GM needs additional revenues not to spend on R&D or design. Maybe GM can keep the interior on its money maker stuck in 2014 for a decade.