That'* good to know. The first set had about 50k-55k miles on them and I decided to change them since I needed to replace the front springs because one cracked. So, the car got treated to 4 new KYB'*, new front springs, and new front strut mounts.
There were no leaks from the old struts, but they did have a bit less resistance when pushed in than the new ones.
I hope that I can still find the receipt from the current set just in case.