I have a little over 50,000 miles on my Xa's. No visible oil leaks, but the coils are rusty in spots where the red coating flaked off. I wish they looked show-car new, but I've got to expect some wear and tear on a daily driver--especially with 3 years of winter road salt.
BTW, how long are these shocks expected to give good performance? Do the seals or pistons eventually wear out and the damping performance is reduced?