[V6-12v] How to get rid of that annoying sheen on the inside of windows

[Tom Christiansen]

Folks,

It's rainy season in the Seattle area these days. This causes the
windows in my 1994 90S to fog up. The reason is that there's some sort
of sheen/film/grime on the inside of the windows. I've tried amonia
free automotive glass cleaner, Windex (or its Safeway equivalent),
Formula 409 to no avail. I can only distribute this road grime (or
whatever it is) to a nice even smear that causes the windows to steam
up when driving in the wet. Do you have any suggestions for how to get
that stuff off? What do you use to clean the windows?

Thanks,

Tom