98 Forester rear wiper is squeaking, but not between the blade and the glass. Instead, the squeaking is from where the wiper arm rotates Original wiper arm, and a new Trico Tech wiper (a private label version of the Trico Flex). It isn't sweeping the whole area the wiper is supposed to sweep, so the arm may already be on its way out. Would this go away when the wiper arm is replaced? And what kind of lubricant would be best to use on the wiper arm pivot? It is mounted below the glass, so there would be no danger of any oil getting on the glass.