OK, What i do is every time i bleed my brake i will put water in them. But the next time i whack some oil in there so that it lubes up all the parts. the brake feels crappy  but oh well lol . 
 
Hope i helped.  
 
P.s if u don't want to do that then just whack some gt-85 in there then flush it out a bit later that way there will be lube in there.  
 
Scott.