Just a follow up on our 2008 X5 4.8L. Since replacing the oil cooler Orings, Coolant tube, Intake manifold gaskets, water pump o'rings, all heater and radiator hoses, valve cover gaskets, timing cover gaskets, many O'rings and seals, changed out all fluids, tranny 2 times, front differential 3 times, for some reason it kept coming out dirty but I had the fluid tested and it tested perfect so no worry's installed a new AC compressor and condenser a new front drive shaft and last a new drivers side front wheel bearing. Now a few thousand miles of leak proof road time I am starting to like and appreciate our X5 again. From Thanksgiving till February I was hating this car and the people that made it. I put $2,500 in parts and an enormous amount of labor into these projects but now the car seems like brand new. Runs perfect. Last trip, 1,100 miles it got 20 MPG and we ran hard, 75-85 mph almost all the time with the car loaded heavy, 3 people and a lot of gear. Should a car need all these repairs at 100,000 miles. I say Hell No, a Toyota or Honda would not have needed this, heck my Ford Fusion did not need any of this done but this is a really nice driving car now that it is fixed. I hope to run it another 100,000.
If all these jobs were done in a shop I think it would approach $10,000 rather than my parts only cost of $2,500.
My last fear with this car is that the coolant gasket at the rear of the engine behind the transmission bell housing will start leaking some day. I did not pull the tranny to replace this last gasket.