Originally Posted by holder
The real question is there a difference between this oil and regular group 3 stuff, it appears that it is fairly easy to get a group 3 rating, but not as easy to get a group 4 rating. If you look at how low the group 3 bar is, it is likely possible many group 2's can actually "qualify" for group 3. But, obviously group 3 sellers have to sell their stuff for premium dollars, so it behoves them to have "synthetic" oils separate from conventional. But 120 viscosity index and low sulfur is almost all that is needed to be synthetic group 3. So technically gas to liquid might be group 3, but there may be more to that story.
None of which has to to do with solubility. And the group designations aren't "hard" nor "easy", that's not the way it works.
It seems to me like you joined the board to make some point, am I right? Have you made it yet?