[PaHonda]

The day I bought my TSX, it had rained all day. I thought the water trail marks on the rear window would clean off easily. I was wrong. They turned out to be permanent stains.

I tried to remove them with glass cleaners, clay bar, polishing compound, diluted vinegar... Nothing seemed to work that I could think of. I didn't want to scratch the glass with anything harsher. I also didn't try the orbital polisher to avoid scratching the glass.

I searched the web and found a site for Spot-X Hard Water Stain Remover that claimed it could remove these stains. At this point I was considering getting a new rear window, so I thought I would give it a shot for under $20. The results are pretty good.

In the pictures below, the driver's side of the rear window was cleaned and now looks like normal glass. The passenger side shows the blueish water trails and stains that were covering the entire rear window. It was starting to rain when I took the pics, so there are a few drops of water on the windshield.

If you try to use Spot-X, it will take a lot of scrubbing to remove the stains. I got through about half of the rear window in 45 minutes of constant scrubbing action, but it is working.

Before:

After:

 

[BSoares]

Nice!

 

[wong05tsx]

Why not apply the spot-x with the DA that you said you had? woulda prob cut your time by over 1/2

 

[PaHonda]

The instructions said to use their scrub pad to prevent scratching. This stuff is a powder that you need to add enough water to make a paste. I thought my orbital polisher might throw that stuff all over the place. All I really cared about was cleaning those stains.

 

[komarovdv42]

A very interesting option for cleaning car glass is steaming it, because after steaming even white spots do not remain. It's good that in the article Car steam cleaning process | What is car steam clean? I was advised to use the car steam cleaning process for the exterior and interior. Of course, the most interesting thing is cleaning the interior, because it’s not so safe to clean with water, but it’s quite possible and not necessary to dry the seats with steam for a long time, this is all due to the fact that steam does not leave much water on the surface of about 5%