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#4571389 - 11/11/17 11:26 PM Removing Rain-X - the final word?
bloc Offline


Registered: 10/17/08
Posts: 17
Loc: Houston, Tx
Hello all,

First off, I'm not looking for a debate on whether or not Rain-X is worth the trouble. It is on a car I bought, and I want it off. I've done a fair bit of searching online and have tried a lot of stuff.. windex, foaming glass cleaner, lighter fluid, sulphomic acid (for cleaning coffee makers), etc. None of this has had any effect.

Here's something I dug up searching for "rain-X patent"

CLAIMSWe claim:1. A water repellent glass treatment for automotive applications comprising a quaternary compound concentrate in solution with a solvent dispersible in water, alcohols, and water- alcohol mixtures imparting a good degree of hydrophobicity to a windshield surface.2. The water repellent glass treatment of claim 1, wherein said quaternary compound is selected from the group consisting of silicon based quaternary ammonium compounds, siloxane based quaternary ammonium compounds, fatty quaternary ammonium compounds, and mixtures thereof .


How would one go about removing a silicon/siloxane based quarternary ammonium compound, without damaging the underlying glass?

I considered having it polished off but have zero experience with a polisher and want to see if I can do this at home.

Thanks for any insight

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#4571394 - 11/11/17 11:33 PM Re: Removing Rain-X - the final word? [Re: bloc]
Cdn17Sport6MT Offline


Registered: 09/30/17
Posts: 19
Loc: Vancouver, BC Canada
I once decided to remove RainX -- and I contacted the mfr. Now this was some 30 or 35 years ago, I'm afraid, and the chemical formulation of RainX may have changed. In any case, at the time, I was told to use the cleanser "Bon Ami" which I believe is still available in US grocery stores (not in Canada, for many years). Well, it did work, and I can't recall any damage that resulted to the windshield ('78 Chev BelAir).

Mebe try with that product?

Cheers from Vancouver.
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#4571401 - 11/12/17 12:00 AM Re: Removing Rain-X - the final word? [Re: bloc]
97prizm Offline


Registered: 05/25/05
Posts: 752
Loc: USA
Glass Science glass scrub. Glass Science
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#4571406 - 11/12/17 12:10 AM Re: Removing Rain-X - the final word? [Re: bloc]
Fsharp Offline


Registered: 12/11/15
Posts: 417
Loc: Kentucky
I bet a strong, polar, organic solvent like acetone would take it off. It won’t harm the glass but keep it off of the paint! If Bon Ami would work that would be a safe product to use its just a gentle abrasive powder mixed with a soap or detergent.

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#4571409 - 11/12/17 12:24 AM Re: Removing Rain-X - the final word? [Re: bloc]
Shannow Offline


Registered: 12/12/02
Posts: 40157
Loc: 'Stralia
There was a thread the other day that showed how the stuff works.

It's a chemical reaction as opposed to a coating.

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#4571424 - 11/12/17 02:02 AM Re: Removing Rain-X - the final word? [Re: Cdn17Sport6MT]
Carmudgeon Offline


Registered: 04/26/05
Posts: 557
Loc: Under the hood
Originally Posted By: Cdn17Sport6MT
I once decided to remove RainX -- and I contacted the mfr. Now this was some 30 or 35 years ago, I'm afraid, and the chemical formulation of RainX may have changed. In any case, at the time, I was told to use the cleanser "Bon Ami" which I believe is still available in US grocery stores (not in Canada, for many years). Well, it did work, and I can't recall any damage that resulted to the windshield ('78 Chev BelAir).


Right. Back when it was still a Unelko product/formula, they advised that abrasion was the way to remove it.

Makes sense, given that the need for reapplication is most evident in the swept area covered by the wipers.

Also worth noting that only the old "1886" formula (feldspar/soap) Bon Ami is safe for glass, not the newer version.

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#4571427 - 11/12/17 02:30 AM Re: Removing Rain-X - the final word? [Re: Carmudgeon]
michaelluscher Offline


Registered: 10/07/12
Posts: 2438
Loc: Staten Island, NY
Originally Posted By: Carmudgeon
Originally Posted By: Cdn17Sport6MT
I once decided to remove RainX -- and I contacted the mfr. Now this was some 30 or 35 years ago, I'm afraid, and the chemical formulation of RainX may have changed. In any case, at the time, I was told to use the cleanser "Bon Ami" which I believe is still available in US grocery stores (not in Canada, for many years). Well, it did work, and I can't recall any damage that resulted to the windshield ('78 Chev BelAir).


Right. Back when it was still a Unelko product/formula, they advised that abrasion was the way to remove it.

Makes sense, given that the need for reapplication is most evident in the swept area covered by the wipers.

Also worth noting that only the old "1886" formula (feldspar/soap) Bon Ami is safe for glass, not the newer version.


I heard barkeeper's friend is the modern approved way to clean glass?
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#4571466 - 11/12/17 05:35 AM Re: Removing Rain-X - the final word? [Re: bloc]
Cujet Offline


Registered: 02/15/03
Posts: 7238
Loc: Jupiter, Florida
Rain X sells a glass cleaner that is in essence, a mildly abrasive paste. It will remove Rain X.
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#4571479 - 11/12/17 06:17 AM Re: Removing Rain-X - the final word? [Re: bloc]
Dallas69 Offline


Registered: 02/11/14
Posts: 1676
Loc: Texas
Why do you want it off?
It will eventually wear itself off,it's not a lifetime deal.
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#4571488 - 11/12/17 06:43 AM Re: Removing Rain-X - the final word? [Re: bloc]
mcrn Offline


Registered: 11/30/05
Posts: 3207
Loc: FL
From my experience you might need to replace your wipers as well after you get it off.
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#4571535 - 11/12/17 07:44 AM Re: Removing Rain-X - the final word? [Re: bloc]
Donald Online   content


Registered: 03/21/04
Posts: 20556
Loc: Upstate NY
Won't it just go away on its own? I would not go crazy removing it.
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#4571547 - 11/12/17 08:12 AM Re: Removing Rain-X - the final word? [Re: bloc]
Artem Offline


Registered: 10/30/10
Posts: 5131
Loc: Florida
Unreal... just when I thought, how can anyone drive in the rain WITHOUT rain-x, this thread comes up.

Can the OP share his reasoning why he wants it off?

Sounds like you could have scrubbed it off already but the glass is so clean, the water will bead up naturally. Hahahaha
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#4571548 - 11/12/17 08:12 AM Re: Removing Rain-X - the final word? [Re: bloc]
Jimzz Offline


Registered: 10/03/14
Posts: 1170
Loc: NoVA
Put a strong winter formula washer fluid in your cars washer fluid tank and just run that for a second or two each morning. I've found rain-x does not last long when good washer fluid is used on it.

Any reason you don't like rain-x? I hate it can't hold up to good washer fluid so I rather mine last longer.
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#4571581 - 11/12/17 09:05 AM Re: Removing Rain-X - the final word? [Re: bloc]
Mainia Offline


Registered: 04/06/15
Posts: 227
Loc: Upper midwest
I love the stuff, but don't like the wiper chatter it can give. Still use it. Especially on side windows, in Minnesota winters+.

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#4571583 - 11/12/17 09:08 AM Re: Removing Rain-X - the final word? [Re: bloc]
SHOZ Offline


Registered: 06/28/03
Posts: 5807
Loc: Illinois
I use BonAmi on the glass before retreating with RainX.

I first wash it and get all organic material off, then spray it again with some cleaner and sprinkle on the BonAmi. Then let it dry and polish it off with a cloth.
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