Just regular ole Valvoline 80-90. The stuff without friction modifier. That picture was taken after a quick blast of brake clean.
I took the carrier out and found that my pinion preload was ~7 in lbs. Wondering if I had a bearing that I didn't quite get seated as the nut had not moved. I was able to re torque the pinion nut to get the preload back into spec. After that I re installed the carrier and set by backlash to .010. Checked the pattern, its basically identical to my previous pattern. Pinion and carrier together was running @ 60 in/lbs.
Took the car back out this afternoon, the whine is still there:mad:. It comes in @ ~45mph and is gone by 50. Outside of this you cant hear the rear gears at all.
