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post #1 of 42 (permalink) Old 09-07-2006, 08:34 AM Thread Starter
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windshield fog

The inside window of my car fogs up very easily. I have cleaned it to the point where it is crystal clear using both invisible glass and also rubbing alchohol but any time I drive with the windows shut it fogs up again, it does go away very quickly as soon as I either open a window or use the defrost but is still an annoyance.

The side windows aren't affected at all, just the front windshield

Does anyone have any suggestions? I really don't trust any of those anti-fog products since they all seem to have a history of causing glare.

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post #2 of 42 (permalink) Old 09-07-2006, 09:03 AM
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POS Ford.

Not sure if you want to step outside of the realm of auto products Joe, but you might actually have some luck with the stuff that is to be used on the visors of hockey helmets.
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post #3 of 42 (permalink) Old 09-07-2006, 09:18 AM
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Just do like swimmers do - spit on the windshield and spread it around with your finger!
You could at least try Fog-x or similar on a small patch and see if you like it.

Googled "windshield fogging" and found this link:
http://www.dctech.com/physics/features/0103.php
pretty interesting

Last edited by sc.intrepid; 09-07-2006 at 09:42 AM.
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post #4 of 42 (permalink) Old 09-07-2006, 09:55 AM
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stop breathing so much!

but seriously, maybe you can just drive with the window cracked?
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post #5 of 42 (permalink) Old 09-07-2006, 09:59 AM Thread Starter
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Quote:
Originally Posted by gazetowardthesky
but seriously, maybe you can just drive with the window cracked?
Yeah, like I said it's easy to clear, just an annoyance

Maybe I will try some fog-x, worst case scenario is I see halos at night and end up cleaning the whole thing with alchohol again to start over
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post #6 of 42 (permalink) Old 09-07-2006, 10:48 AM
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Why is using the front defroster an annoyance, that's exactly why it's in the car.
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post #7 of 42 (permalink) Old 09-07-2006, 10:53 AM
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Quote:
Originally Posted by '98-ESer
Why is using the front defroster an annoyance, that's exactly why it's in the car.
LOL, I think he's saying the fog is an annoyance, not the defroster...
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post #8 of 42 (permalink) Old 09-07-2006, 10:55 AM
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dont use just the defroster, it causes lower mpg, read the manual! i discovered 3 days ago that using the MIX feature is actually a better combo for windshield fogging, and it doesnt lower your gas milage. Using the mix feature also runs the ac compressor which dries out the air that hits the windshield- thus making less moisture and less fog! Other then that I would try an anti-fogging product, I used to use stuff on paintball masks and I never noticed any haloing effects. Let me know if any anti fog things work, cause my side windows fog like hell in the winter, more so then most cars... I have horrible weather stripping.
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post #9 of 42 (permalink) Old 09-07-2006, 10:57 AM
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Quote:
Originally Posted by Japy
dont use just the defroster, it causes lower mpg, read the manual! i discovered 3 days ago that using the MIX feature is actually a better combo for windshield fogging, and it doesnt lower your gas milage. Using the mix feature also runs the ac compressor which dries out the air that hits the windshield- thus making less moisture and less fog! Other then that I would try an anti-fogging product, I used to use stuff on paintball masks and I never noticed any haloing effects. Let me know if any anti fog things work, cause my side windows fog like hell in the winter, more so then most cars... I have horrible weather stripping.
Just wondering... how does running defrost possibly lower your mpg, whilst running the a/c compressor does not???
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post #10 of 42 (permalink) Old 09-10-2006, 11:08 PM
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mine does that also, joe....I clean it and a few days later it is foggy again....i thought it might be something to do with the air coming out of my defroster having a somewhat greasy residue after it hits the window....I know in the past that when I had a heater core going out in my first car the windshield would fog up alot and it kept doing it so i took it in and found out my core was going bad and leaking a little bit and it was coming out the defroster/air conditioning ducts when I ran them...hope the same isn't happening again...lol...although I never smell antifreeze, but I AM always low for some reason, hmmmmmmmm....lol....
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post #11 of 42 (permalink) Old 09-11-2006, 03:01 PM
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Quote:
Originally Posted by IntrepidBus IV
Just wondering... how does running defrost possibly lower your mpg, whilst running the a/c compressor does not???
I dunno, its what the manual said :P
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post #12 of 42 (permalink) Old 09-11-2006, 03:13 PM
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I would try the Rain-X anti-fog, seeing that the Rain-X works great on the winshield the anti-fog can't be half bad. I think the fogging issue is when you have the windows closed the air being pulled up is a much different temp then that of the windshield and the result would be the fogging. I have had that issue before but when I change the temp of the defroster and speed up the fan it goes away. Just my 2 bits
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post #13 of 42 (permalink) Old 09-11-2006, 03:14 PM
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can you scan that in real quick
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post #14 of 42 (permalink) Old 09-11-2006, 10:45 PM
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Mine does that at times too, even when it is warm outside (so using the defroster sucks).
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post #15 of 42 (permalink) Old 09-14-2006, 07:10 AM
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A look from another angle. Ok, I have seen cars come into the shop with this issue. The problem with them had been that the drain from the AC core under the dash was plugged. The water that collects has no where to go. When you run the AC,do you have water on the ground? If not. I would say this is the issue. The water has no place to go. It will also start a bad smell.
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