was talking to acquaintence today and mentioned that the windshield on my 20 year old diesel was badly pitted and how i was reluctant to spend $300 or so on a replacement. well, he shared the fact that years ago he applied rain x to a pitted windshield and while it was not the same as new glass there was a noticeable improvement in visual clarity. (?). anyone have favourable experience using rain x to reduce the ravages of pitting? thank you.