squeeking anti roll bar
 

hi,can any one help ,i have 140bhp passat estate and in the cooler weather i have an annoying squeek from the front of the car ,one side is worse than the other,in the hot weather it is,nt there,ive looked at all suspension parts and every thing seems fine,and car past mot yesterday with no problems,its only covered 30,000 miles,im thinking it could be anti roll bar mounts,any one had this problem?and how easy is it to replace them? thanks