I am having a hell of a time removing hard water spots from rear window glass on my new (one week old) 06 MR. The salesman advised me that for whatever reason, my car (and 3 other evos) sat on the lot for close to a year. Exposed to elements the whole time. Ugggh! Anyone know of a good removal technique for this prob? Tried traditional auto glass cleaners to no avail. Otherwise, lovin it!!!

 

try claybar

 

Sand paper

 

Hard water spots are mineral build up. Claybar might work, but I would prefer to use some method that dissolves the minerals. You've tried washing the windows with dish soap?

 

try some dish soap

 

I've used Mothers Chrome Polish to remove spots from my windows with success.

 

You can try this.

http://www.autogeek.net/diglkitforma.html

 

For windows, use 000 grade steel wool with glass cleaner. Safe and easy, just watch your moldings.

 

You can try steel wool with glass cleaner, but if it doesnt work get some gliptone spot check and use it with a brillo pad it worked on my 95 integra but read the directions its no joke trust me im a detailer.

 

Try COMET, the crap you use on your sinks and counters. It seems to work really well on glass for me before. Use it it films over a little then you re wash it a couple times till it is all off. Good luck with that..

 

Try some fine steel wool and car wax. I used to detail too and found that it works on most water spotted windows with a few really hard exceptions. It'll be a work out, but is safest by my book.

 

no, no, no...never use other detergeants especially dish soap.

 

+1

 

I do believe that straight up white vinegar will dissolve hard water spots, too.

 

000 steel wool will do it. I learned that from wacthing somene getting windows replaced on their car. the installer used it and the glass cleaned up perfectly.