I am replacing a torn boot on the drivers side steering rack, during the disassembly I noticed some oil in the boot, is this normal? What is this fluid? 80-90 weight oil? How do you replace this fluid? I also will be replacing the passenger side boot tomorrow, what other things should I look for while doing this job? Any info will be appreciated. I've only had the car for a little over a year and have been doing some repairs myself and truly enjoy it. Thanks, Jim