Delica Canada | Mitsubishi Van Club

My windshield is showing its age with sections of fine "smeary" or kind of smudged visibility showing behind the wiper sweep... only in the rain and only at night. By day it's fine. New wipers don't help and I'm not about to buy a new windshield over this but wondered if there's any treatment or polish available to restore auto glass to its original smoothness.

These guys... http://www.gtglass.com/glass-scratch-re ... t-supplies ...seem like a possibility but they haven't responded to an e-mail inquiry I sent.

Any ideas or suggestions?
Thanks.

Clean inside and outside with automotive windex (regular windex works if you don't have a tinted strip at the top). Then use traditional RainX on the outside and RainX de-fogger on the inside. I had the same problem and this worked for me. It needs re-doing every 4 months or so unless I touch the windshield a lot.

Thanks for the suggestion.
This is definitely on the outside only and nothing to do with fogging. I did apply RainX a few years ago (before I understood the proper defrost settings) and found it caused momentary but annoying problems immediately behind the wiper sweep; kind of the same problem I have now. In fact I'm not sure some residual RainX isn't actually the source of the current problem. I'm thinking maybe I should clay-bar the glass and then polish with an ultra fine product; as long as it's ultra finer than the present surface.