Haze building up on interior glass?

[UNHCLL]

Originally posted by Demlotcrew
I think its things like pollen, brake dust, diesel suet etc.

Andrew

Question #1: What is meant by "outgassing" of a kapton label?
Anwer #1: We all love the smell of a new car...there's nothing quite like it. One year later...have you noticed the haze on the windows, even when you have never allowed ANYONE to smoke in your car? The lovely "new car smell" is an example of OUTGASSING, and the foggy window is typical of the long term effects, a haze deposited on surfaces. Many materials will emit gases under heat, such as the heat of the sun on the interior of your car.

These "volatile" materials are present in almost all polymeric/synthetic matertials, such as coatings, films, and adhesives. As heat is applied, the volatile organic compounds (or VOC's) evaporate from (in the case at hand) the polyimide or kapton label.The gaseous molecules are free to be redeposited on a cooler surface, such as a car window, mirror, or any other surface.

http://www.polyonics.com/nm/publish/news_11.html

[Demlotcrew]

Not saying that what you are proposing to be the cause is false but the E30 M3 is not a brand new car and i would hazard a guess that in the states with your heat most polymeric/synthetic materials would have all been redeposited a lone time ago.

Andrew

[jht3]

Originally posted by ///Mflossin
it could be the release agents in the plastic/vinyl...especially if you park in the sun and the interior is exposed to direct light. I can also depend on products that you use to treat the vinyl. I wouldn't worry about it at this point if it's VERY minor. but if it's clearly noticeable...you are likely looking at a heater core.

yea, i understand that. however as i already stated i don't use vinyl treatments. i still think something is leeching out, but i don't know exactly what.

it's not noticeable to probably anyone but me. drives me crazy though!

[mshii]

That haze turned out to be a heater core in my car.:2:

[LeeVuong]

The classic cause of hazed glass is a faulty heater core that spills coolant. Coolant is greasy and you end up with "greasy" windows. Easy.

[jht3]

as an update, my heater core went out at the track last fall. i now have a new one in there, but haven't driven the car enough to see if did the trick