Help with windshield fogging/greasing up
#1
Help with windshield fogging/greasing up
Hello guys,
Something weird is happening to the windshield on my '96 Z28 (OEM as far as I can tell). I clean it inside and out and 3-4 days later the inside shows a greasy residue and fogging that really causes a lot of glare, specially when driving facing the afternoon sun.
I thought it was hot air coming out from under the trailing edge of the hood, causing this effect because the inside of the glass was colder from the A/C. This is not the case because there is this greasy residue the smears all over the place when I rub it with a paper towel. Some other facts:
-I live in AZ where there is almost no humidity. I can't recall this happening when I lived in humid FL.
-I have tried cleaning the interior of the windshield with: glass cleaner (with and without ammonia), vinegar, alcohol, just water and a paper towel with lots of rubbing and then a dry one.
-I have always used leather care products. Could this be evaporating and causing the residue? it only happens in the windshield not the other windows.
-Do I need to change the dryer in my A/C? the system works well and is not leaking or losing pressure.
My windshield has some deep streaks on the outside so I was even thinking of getting full coverage insurance and cracking the glass to replace it but I don't know if this will cure the problem. seems like any glass would be affected.
Anyone else has suffered this? I have to clean the glass every 3-4 days and you know it's not easy to do on 4th gens...
Something weird is happening to the windshield on my '96 Z28 (OEM as far as I can tell). I clean it inside and out and 3-4 days later the inside shows a greasy residue and fogging that really causes a lot of glare, specially when driving facing the afternoon sun.
I thought it was hot air coming out from under the trailing edge of the hood, causing this effect because the inside of the glass was colder from the A/C. This is not the case because there is this greasy residue the smears all over the place when I rub it with a paper towel. Some other facts:
-I live in AZ where there is almost no humidity. I can't recall this happening when I lived in humid FL.
-I have tried cleaning the interior of the windshield with: glass cleaner (with and without ammonia), vinegar, alcohol, just water and a paper towel with lots of rubbing and then a dry one.
-I have always used leather care products. Could this be evaporating and causing the residue? it only happens in the windshield not the other windows.
-Do I need to change the dryer in my A/C? the system works well and is not leaking or losing pressure.
My windshield has some deep streaks on the outside so I was even thinking of getting full coverage insurance and cracking the glass to replace it but I don't know if this will cure the problem. seems like any glass would be affected.
Anyone else has suffered this? I have to clean the glass every 3-4 days and you know it's not easy to do on 4th gens...
#3
Do you smoke? That will cause a real bad film just as you are describing. That is the only thing that i know of other than your heater core leaking into the car. You will probably be able to smell the anifreeze and the carpet may be damp from it.
#5
It might be one of your car care products. I once had my old Z up at a dealership for PCM issues, and my buddy decided to detail the car for me while it was there. When I got it back, the windshield kept greasing up like you described. He used some super greasy **** that the dealership had to do the interior plastic, and it made a helluva mess.
#6
I do not smoke. The heater core seems fine; there is no antifreeze smell or leaking in the passenger footwell area. I've used the heather only a couple times in the winter, right now the summer temps are 105-115F here so it's just the A/C.
It never rains here so its not like the T-tops are leaking and then the water condenses in the windshield. When I wash the car I'm always careful around my T-tops seals anyway.
I'll try Napa spray cleaner which I think it's the best and I got a windshield cover now to cut down on the interior temp when the car is parked. The car already has tinted windows and I bought the factory T-top inserts a long time ago to cut down on the sun and heat when I lived in Miami.
Thanks guys, if anyone else has more ideas...
It never rains here so its not like the T-tops are leaking and then the water condenses in the windshield. When I wash the car I'm always careful around my T-tops seals anyway.
I'll try Napa spray cleaner which I think it's the best and I got a windshield cover now to cut down on the interior temp when the car is parked. The car already has tinted windows and I bought the factory T-top inserts a long time ago to cut down on the sun and heat when I lived in Miami.
Thanks guys, if anyone else has more ideas...
Last edited by Interceptor1; 07-10-2010 at 11:32 PM.
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