Quote Originally Posted by rmolivar View Post
I don’t use any special protection. I just wipe off the glass parts of my car as soon as possible whenever they got rained upon. Works so far in my 8 year old car. Watermarks become hard to remove only when they have dried and stayed on your car for quite a while.


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I agree.

I also make it a habit to "rub down" the glass portions if time permits so to avoid heavy accumulation of water marks. It is quite tedious and I suggest to use a heavy duty rubbing compound to lessen the time to rub the glass panels.