Streaky glass...when Windex just doesnt work...

Newspaper,the only thing to use with any cleaner, i use vinegar-lemon juice. Most of the new stuff is so watered down with non-toxic ingredients, afraid some kid will drink it.

I had the same problem with some Challenger glass. It looked fine unless you caught it in the right light then you could see some coloured streaks in it. Nothing would take them out, I tried everything from lacquer thinner to cut polish. Ended up throwing the glass away.

Sheldon

SOS pads. They clean glass very well and don't scratch it. I've also used Fast Orange for nasty junkyard grunge on glass.

000 steel wool with CLR (calcium lime rust remover).
Curt

Buy some chromium oxide from a glass shop and polish them BEFORE you install them. None of these other methods would work on the glass I had. The chromium oxide cleaned them up like they were brand new( where I could reach AFTER I installed the glass). It requires a buffer so it makes a HUGE mess!

I had streaky glass on my 04 VW GTI so bad that it was hard to see out at night. The rubber molding that presses up against the glass to keep the water and dust out of the door over the years finely scratched the glass and made it look streaky (almost frosted in area's).

I bought some the Eastwood glass polish and it polished it right out and made the glass look like new. I had hard water spots on some of the other windows on the car and it cleaned those windows real nice. I am planning on polishing all the windows on my Cuda' with the Eastwood polish before I re-install them in the car.

The Eastwood system works good, but it is messy, so doing it when the glass is out of the car is the best way to do it.

Here is a link to the Eastwood polish:

http://www.eastwood.com/pro-glass-polishing-kit.html

I've used Acetone (no tint of course).

Lots of suggestions on removal, but what is on the OP's glass in the first place? Almost sounds like the heat treat? streaks one sees sometimes with polarized sunglasses in reflected sunlight.

So..I used an SOS pad with a little vinegar/water spray, and they are cleaning right up. My guess is mineral deposits from sitting in a Nebraska cornfield for 15 years....thanks for all the great suggestions!