using it in an LSx, not an RB lol, used to use Motul 8100 Xcess 10w40 in that.
Been reading an absolute shitload of LS forums and BITOG lately, the main evidence for the Edge comes via Steve from Mainlube, who has filtergrams to back up his claims that Edge 10w60 is second only to the Mainlube 10w60 engine oil. (as well as being in that field etc).
Was mostly concerned with whether the regular RP was in fact a Group 4, or whether it was still a 2/3 with a custom additive package (as far as I can read it has a lot of ZDDP and Moly in it).
Moodles2: on further reading, it appears that the Timken machine used for that test is actually meant for testing out greases not engine oils. Also half of the oils mentioned in that review no longer exist.