Windshield is geasy/streaky

allinon72 · 11-01-2017, 01:20 PM

Not sure what it is about my windshield, but no matter what I try I can't get rid of the streaking. There is some sort of oily grease that persists, especially visible in the sun. I have tried quick detailer, Sprayway glass cleaner, clay bar, Adam's H20 guard and gloss. Nothing seems to work.

Am I the only one? What should I try next?

damageprone · 11-01-2017, 01:27 PM

Cleaning windows are a PITA. This laborious 3 step process seems to work for me. https://www.autoblog.com/article/cle...e-detail-ep-9/

Wo-Wo · 11-01-2017, 02:13 PM

Try vinegar or white spirits (not sure what it's called over there).

The last thing you want to use on your windscreen is a QD or spray wax.

Eric S · 11-01-2017, 02:14 PM

91% IPA wipedown, microfiber towel. Just watch the trim as you don't want to constantly be wiping them with IPA. After you get them clean the first time, switch to something like 70% IPA mixed with distilled water at a 1:1 ratio

just make sure your towels are clean as left over laundry soap, polishing residue, etc will smear the glass.

Bruce_SC · 11-07-2017, 07:09 AM

I am assuming inside and not outside?

Great towels, a good glass cleaner, and a little time.

We initially like to use something like Optimum No Rinse to clean the window. Then you can take a dedicated glass cleaner to finish it out.

We use a wet towel and a dry towel. Dry towel is for final buffing.

Bruce

smithf80 · 11-12-2017, 10:04 PM

Are you cleaning the inside or the outside?

allinon72 · 11-13-2017, 01:29 PM

Quote:

Originally Posted by smithf80

Are you cleaning the inside or the outside?

Outside

smithf80 · 11-13-2017, 01:34 PM

Quote:

Originally Posted by allinon72

Quote:

Originally Posted by smithf80

Are you cleaning the inside or the outside?

Outside

Are you sure it's not on the inside? Outgassing from the plastics causes this.

allinon72 · 11-13-2017, 05:41 PM

Quote:

Originally Posted by smithf80

Are you sure it's not on the inside? Outgassing from the plastics causes this.

I am sure. I can see the smears as I wipe.

Aaaaaaaaa · 11-13-2017, 06:09 PM

You need a degreaser like IPA or an automotive all purpose cleaner. Could also try products made for tar removal like CarPro Tar-X or Stoners Tarminator.

smithf80 · 11-13-2017, 06:35 PM

Quote:

Originally Posted by allinon72

I am sure. I can see the smears as I wipe.

I think you should clean both the inside and outside with CarPro Eraser and see if you still have this issue.

Under what conditions are you doing this cleaning? In a garage? Direct sunlight?

I also get perfectly clean glass using Adam's Waterless Wash.

You might also consider polishing the glass with Meguiars M205, that will get ANYTHING off.

11-01-2017, 01:20 PM	#1
allinon72 Brigadier General 4908 Rep 3,788 Posts Drives: 20' M2C, 23' X1 Join Date: May 2017 Location: Indianapolis, IN iTrader: (2)	Windshield is geasy/streaky Not sure what it is about my windshield, but no matter what I try I can't get rid of the streaking. There is some sort of oily grease that persists, especially visible in the sun. I have tried quick detailer, Sprayway glass cleaner, clay bar, Adam's H20 guard and gloss. Nothing seems to work. Am I the only one? What should I try next?
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11-01-2017, 01:27 PM	#2
damageprone Major 581 Rep 1,055 Posts Drives: Tesla Join Date: Mar 2017 Location: Casino iTrader: (1)	Cleaning windows are a PITA. This laborious 3 step process seems to work for me. https://www.autoblog.com/article/cle...e-detail-ep-9/
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11-01-2017, 02:13 PM	#3
Wo-Wo Captain 281 Rep 698 Posts Drives: BMW M4 Comp Coupe Join Date: Jul 2013 Location: East Mids iTrader: (0)	Try vinegar or white spirits (not sure what it's called over there). The last thing you want to use on your windscreen is a QD or spray wax. __________________ Wo-Wo Detailing Accessories www.wo-wo.co.uk
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11-01-2017, 02:14 PM	#4
Eric S Lieutenant 293 Rep 546 Posts Drives: in pre-order stages Join Date: Mar 2017 Location: orange, ca iTrader: (1)	91% IPA wipedown, microfiber towel. Just watch the trim as you don't want to constantly be wiping them with IPA. After you get them clean the first time, switch to something like 70% IPA mixed with distilled water at a 1:1 ratio just make sure your towels are clean as left over laundry soap, polishing residue, etc will smear the glass.
	Appreciate 0 Quote

11-07-2017, 07:09 AM	#5
Bruce_SC Second Lieutenant 80 Rep 257 Posts Drives: Truck Join Date: Feb 2017 Location: South Carolina iTrader: (0)	I am assuming inside and not outside? Great towels, a good glass cleaner, and a little time. We initially like to use something like Optimum No Rinse to clean the window. Then you can take a dedicated glass cleaner to finish it out. We use a wet towel and a dry towel. Dry towel is for final buffing. Bruce
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11-12-2017, 10:04 PM	#6
smithf80 Major General 2804 Rep 5,316 Posts Drives: G80 M3 6MT Join Date: Mar 2014 Location: Long Island, NY iTrader: (1) Garage List 2022 G20 330i [9.00] 2018 F80 M3 [9.75]	Are you cleaning the inside or the outside? __________________ Scott, Partner Insight Automotive Consulting Click HERE for all discounted BMW New Car Pricing Click HERE for all BMW In Stock Inventory Specials Call/Text: 516-416-5481 Email: scott@insightautoconsulting.com
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11-13-2017, 06:09 PM	#10
Aaaaaaaaa Banned 7559 Rep 5,056 Posts Drives: The other M3 Join Date: Oct 2014 Location: So Cal iTrader: (0)	You need a degreaser like IPA or an automotive all purpose cleaner. Could also try products made for tar removal like CarPro Tar-X or Stoners Tarminator.
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