Clean window streaking

[two_travelers]

Side windows on our coach are "stained" if you will from roof run off. What's the best way to clean this off? Some kind of glass polish?

Thanks to all who share their knowledge!

[rgatijnet1]

A quick wipe down with lime-a-way will remove any dried mineral deposits. Just keep it off of painted surfaces by dampening a rag and wiping the window. Wear rubber gloves and rinse afterwards. Quick and easy with no scrubbing needed.

[gbopp]

Did you try vinegar?