Finally got around to changing the gear lube after the break in period. Said to change it after 500 miles, but I went about 2000 because its been just too darn cold to work on the car for the last couple of months!
I was really surprised how dirty/dark the lube was. It was filled with Mobile 1 synthetic 70-90 which is pale yellow and transparent. It came out grey and cloudy. There was also a layer of metal powder covering the magnet. Mixed with gear lube its like thick grey paste. Didn't expect to find that much after break in, but maybe the all gear Eaton Truetrac contributed to that. Also inspected the ring gear teeth for the wear pattern, and it looks great!
Here is a shot of the gears and Eaton Truetrac:
Also added a drain plug, painted the cover, closed it up with a fresh Felpro gasket then filled with Mobile 1 again.
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Took it for a test drive and after half an hour there are no leaks.