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Hiya guys,

I've got baked on window stains all over the rear window... it seems like all my previous imports have had this sorta stuff on their windows.. previously a razor blade and polish was all that was needed to remove it, but this one's a real stubborn bugger.

So how do i get rid of it?

Thanks heaps

Howie

Update ... problem solved

Before

windowgunk.jpg

After

after2.jpg

Edited by Howie

You need to use a descaler. Its hard water stains. You could try vinegar in some water. I would use the real stuff, Apple Cidar Vinegar. The stuff with brown floaty bits :P

Dilute in water and use on the windows. Don't drip it on paint work.

Edited by StageaGirl

Thanks SG. I'm beginning to think it's oxidized onto the windows, i'll need something with a bit of cutting power.... but i'll give vinegar a go.

Might have to get a detailer with an orbital buffer to have a go at it.

It's on the outside, rather than the inside so it's unlikely to be glue.

But i'll ask the professionals... i've seen this sort of oxidization on a soarer that we imported, it took a razor blade and several days to remove it completely, but this is far worse that that.

Interesting post I found on meguires online forum.

Glass polishing
Dont try this if you are not confident about your skills ... my car windows have acid rain i cant get rid of it... i try white vinegar, kerosene, windex, cigar ashes with no result... so after getting nutz (some may say what i do is crazy) i decide to go hard with this.

I use W-8000 yellow foam pad with Deep Crystal Paint Cleaner on a rotary buffer at medium low speed and it works well. But I was curious so i try something with more bite and use Compound Power Cleaner and it works magic.

Next time try this by hand with a piece of terry cloth or by machine with a W=7006 foam cutting pad.

#4 Heavy Cut Cleaner

product_m04.gif

It will work so much better than either of the two product you tried because of the type of diminishing abrasive this product uses. Next time you're around a bottle of #4 Heavy Cut Cleaner, shake up the bottle and pour a little into your fingers and then rub your fingers back and forth. You will easily feel the diminishing abrasives, (if you continue to rub your fingers together your will feel the diminishing abrasives breakdown and disappear).

Now, feel any of the products in the 80's series, such as the #84 Compound Power Cleaner in the same way and it will feel like you're rubbing a soft, smooth hand lotion between your fingers.

The difference is the 80's series uses microscopic diminishing abrasives while the traditional Mirror Glaze products use for lack of a better term, macroscopic diminishing abrasives.

It is this larger size diminishing abrasive particle that cuts, or slices through the film that has built up on the surface of your glass and polishes it off.

Liquid glass cleaners don't offer this polishing effect. When ever I detail a customers car, I'll almost always machine polish their glass with this system so that the glass is a glossy and shiny as the paint. When you do this and you've detailed the car correctly, the finished look jumps out at you! because everything on the car is gleaming.

In Oregon and Washington, I ran into a lot of people with horrendous water spots on their glass, as such, I have a lot of experience polishing glass.

Mike

Original Link

http://www.meguiarsonline.com/forums/showt...p;threadid=4930

Sounds good! I might give this a go. :dry:

You should check out that thread, the forum members decided to use it all over their bathroom and bedroom windows.. the results look great! lol

Edited by Howie

Update. Meguires forum was right.

Meguires Heavy Cut Cleaner (or Meguires Diamond Cut Polish) + a terry cloth + lots of elbow work will do the trick. And it also works on faded headlights for the R34 making them really crystal looking.

Mad082:

have you tried using some steel wool? works ok, but don't go overboard or you will scratch the glass. otherwise 1 of those green scouring pads.

Btw, the gentleman who distributed meguires suggested you do not try using a scouring pad or steel wool on glass, that is a huge no no. You definately need a Diminishing Abrasive, one that breaks down to a polish after it cuts or you end up with scratches that can't be removed.

Edited by Howie

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