Now that you mention it, the front axle seals are pretty hard to replace. You have to pull the axle shafts, which requires removing the wheels, hubs and spindles. Then you have to pull the front differential out to change the seals. The important thing here is to keep track of all the shims and put everything back exactly the way it came out. Once all that is out of the way, it's a pretty easy job. /forums/images/graemlins/rotfl.gif