Having purchased a kit from AB, I decided to have a shop perform the install of new oil pan, filter, paper gasket, sleeve, and ZF Lifeguard fluid (2010 LR4 @ 90,861 miles) The install went well with the exception they had to cut the old pan in half in order to remove it, due to the hacksaw blade binding on the filter neck. When it was all apart we inspected the viscosity, coloration, and metal particle material in the original pan: 1. No metallic particles at all. 2. Oil viscosity and coloration looked as good as the new stuff from AB. - I'm not joking. 3. The filter (which we end up cutting in half upon pan removal) was clean. 4. No leaking from the sleeve. The new metal pan install went fine, although you simply can't beat the o-ring gasket of the original one, paper ..meh. The sleeve was a PITA, but finally got the old one out and installed the new one, there was no sign of leakage and I was temped to leave it alone. We filled it up with the new ZF, following the warming and refilling procedure from the LR technical manual. Checked for leaks, test drove and all seemed fine, however...… Its now been a month and there is still jerkiness between 1st and 2nd from cold. Once the fluid warms up, the jerkiness is diminished although not entirely gone. I've done my second adaptive reset with my GAP tool on the transmission without any luck. The moto of this story - When LR say the tranny is sealed for life, perhaps we should trust them, no? Based on the old fluid alone, it could have easily done another 90K. In hindsight, I should have probably left it alone. Worth the 5 hours to do the job? - honestly no. Save your money, unless you know you have some tranny issues in the first place that might need correcting.