[GB SISSON]

Now that it's installed I have been noticing that both wheels definately turn in the same direction when I rotate one side while up on the jackstands. From youtube it would appear it is a limited slip differential and where I live I consider that a good thing. I used regular 90-140 gear lube for my test drive about 25 mile round trip to town as it never occured to me it may be limited slip. It runs smooth and quiet down the road (did 50 on some straight-aways). When I got to town and slowly turned into a parking lot there was some shuddering with vibrations back there on slow, tight turns, right or left. When I got home I shot everything with my infrared heat thermometer. Yoke was 120 degrees, tailshaft of the T5 was 115 degrees, drums all around 80-85. That seems perfectly fine. All bearings feel smooth and free. I'm sure all the parts are good, but wondering about the need to add a special additive or a different gear lube altogether. I know almost nothing about limited slip or positraction other than they have a clutch pack of sorts and take different lube requirements. Please school me on today's findings. Thanks, Gary