I have owned my ute since new and love it to bits, 3 years ago I had a left axle replaced after hitting a pot hole. The last 18 months has seen me towing some heavy machinery around on big trailers around 1.2t in total. This obviously has taken its toll on the drive train. I just recently replaced the centre bearing after some vibrations where coming out from under the car, drove fine for a month after it was fixed. Just recently when towing and coming on boost heavily in 1st and 2nd when towing I've been getting some serious vibrations coming from the diff, more so when going around a corners. Yesterday I had the oil replaced with some Castrol Syntrax 80w-140 diff oil. Seemed ok this morning but once the diff got warmed up it started to vibrate again, no where near as bad but still is there. Am I looking at a new diff ? Cheers lads