I used Rain X for several years when I was trucking and loved the stuff,so I thought I,d try it on the 6.Well worked good for a few years but eventually it started to streak which was a disaster for night time driving.I never did find anything to remove the coating,so i replaced the windshield this year before goin to laughlin NV.No more rain X for me on the 6.
I think the reason I did'nt run into this trucking is because the windshield did'nt last for much more than a year,due to rock chips etc.