Upper Ball Joint Seal
#1
#2
replace it. really the only choice. not an immediate problem, but it'll deteriorate now. interesting thing-i was at a parts store today where there was a recall posted about moog and several other related brands that have a seal issue. i didn't read it though, so i don't know the specifics. you may be able to get a free set if you can trace the problem to that......
#3