Go to the top of this page, choose Home Forums, Cleaning Tips, type in "Car Windows" in the Search box. There are several postings about cleaning car windows using various products and home remedies. I am going to try a couple of them - wet micro-fiber rag followed by a dry one and Stoner's Invisible Glass from Wal-Mart.

BTW I don't use Windex on my house's windows, mirrors and shower doors anymore because it takes a lot of physical effort to get it streak-free and there was always a film left, as you said. (It is good for refrigerator doors though.) What I use is a lambs-wool mop dipped in Ettore brand "Squeegee Off" solution and various sizes of squeegees on an adjustable extension pole - all from Lowe's. Sparkling clear glass and very, very fast, not to mention that after the initial cost of the tools it is really, really cheap! One bottle lasts two years for me. There was another brand I liked better that was a powder but can't remember the name and can't find it. May have to go to HD to see if they have it.

I tried the squeegee method on my car windows but it didn't work because the windshield is curved and you make a huge drippy water mess. You can't use this solution with a rag because it just won't work - has to be used with a squeegee to get it streak-free.

Nancy the nancedar

Nancy, Aren't these forums great. I am thrilled to learn about the home forums and the cleaning tips. I have been in GardenWeb for several years and love it. I had never looked at the other forums they offer. Now I have another place to check for valuable information.
I appreciate your ideas also. Aren't you in Charlotte? We are in Statesville, but have to come to the airport Tuesday to pick up our daughter and husband from California. I can't wait.
I guess I'd better get over to Walmart for those microfiber towels. Thanks again. Nancy

No, Nancy, I'm the other - other Nancy, in Wake Forest.

Nancy the nancedar

anyone remember Glass-Wax? Dries to a film on the glass that took forever to polish all that dusty stuff off the window.

One thing I learned from a car detailer is that all these vinyl cleaner/shine products like Armor all give up vapors that cause a lot of the film you see building up on interior windows.
So, it's not just cigarette smoke.