I'm having issues linking it but in the February issue of Lubes & Greases Magazine there are two good articles - one of GF-6 and the improvements over GF-5, which look to be substantial and also an article titled "Synthetics are coming." In that article they talked about base oils, demand for lower volatility in lower viscosity grades and how XOM Chemical rested over 200 different materials. Esters and I believe a new PAO.
If anyone wants to link the article feel free.
If anyone wants to link the article feel free.