Hi Lloyd
We use a commercial grade of Windex, it just says Windex on the bottle and a blow-out that says 'institutional size'.
It is really great stuff. You don't realize how great until you run out and buy some at the grocery store and it don't work very well for what we were using it for when I first discovered it. At the time, I was working in an electronics repair shop and it worked miracles where everything else was failing. But even the commercial grade stuff is getting more and more diluted. Just like almost everything else you buy these days.
I wasn't sure what was in Rain-X as I have never bought it. I had easy access to the stuff airlines was using and knew it worked a whole lot better, and without wiper chatter if used on the outside.
We used to use newspaper when their was oil in the ink. Now all we end up with is black smudges on everything when we use it, so it was abandoned. In its stead we have been using some silicone impregnated sheeting for some glass items that look great when polished. Like glass case tops etc. But those sheets just cost to much for everyday use.
Your always up on things! I had a bottle of alcohol with an oil base some years back. The label had come off long before it was empty and I don't remember what the name of it was. It worked great for cleaning leather, especially of cigarette residue, without removing the color or leaving gray streaks. The bottle is now empty and I've looked through every file I have for the old label, which I retained somewhere so I could get some more. I also cannot find my list of various oils. Some oils dry, like 3 in 1, and some remain supple without going ransid. I've been siding with Olive Oil for the time being, until I can find my list again.
TTUL Gary
PS - My Bishop knows I smoke like a stoker furnace!