I changed mine over the weekend, mileage on my '09 is about 29,500. I used the Redline MT85. I pulled the front wheels up on my Rhino ramps and jacked up the rear end and used Harbor Freight jackstands at the designated jacking points at the rear. My floor jack had a removable 3 inch cup so I took a hockey puck, bored a 1/2" hole in the center, countersunk a hex head 1/2" bolt in it and put a washer & nut on the other end to hold it on the jack's lift arm. Worked like a charm with no damage to the differential. I can't really say though whether or not I feel any difference, but it was scheduled maintenance so I'm glad I did it.
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