This is why I feel it has to be something with the oil. The only reason the 05-06 CPS units are seeing more attention is because of the upper bushings seizing.
But there are plenty of engines with old tried and true designs that are seeing gear and other failures that can only be attributed to the oil.
I am leaning towards this being an oil problem also. I know what I have been using and it is not synthetic and it is not the new formulation, the 06 has the rev E and the 05 has a rev B opda and both are clocking close to 70,000.
I did have a squeal a couple of times last winter on cold zero degree startups with the rubi, I was trying a different oil on a whim and took it out just as soon as the temps warmed a bit. I'm sticking to higher zddp levels as long as I can get them. Care to guess which oil would squeal? A hint, it was not a dino oil.
2006 LJ Rubicon 6 speed: Currie arms, Currie Track Bars (They don't hit either), Nth tuck, Nth Springs and oil pan skid, JKS mml, bml, Antirock.
I un-insatalled the wife mod.....lost one Jeep.