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Discussion Starter #1
I've noticed a strange white residue forming on my passenger door right where the glass meets the rubber lip on the inside of the door. I've wiped it off with water and it seems to dissolve and wash away. But it appears again in a few weeks. Thus, it appears to be some type of mold(?). I live near the beach in L.A. so the climate is cool and not humid. Any suggestions?
 
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Yea, I have a suggestion, stop telling everyone it's not humid here. The humidy has been awful for the past month. I feel like I'm back in Jersey. Maybe someone spilled something down the track for the glass and everytime you put it down it picks up some of the dried material. We all should have such problems.
 

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I saw some along the top near the rear gasket for the folding top...
 

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I'm going to take a stab at this. My 05 has this white discoloration starting at the top of the side glass and extending down an inch or two. It's always near the location where the windshield pillar meets the top of the side window. I've had it on both sides.

My son worked in the Bowling Green Assembly Plant for two years and he said that the stain is an RTV (silicone) that's used on the weatherstrips. He said that the plant was aware of the problem and was trying to eliminate it. However, that was a year and a half ago, so it may not have been resloved.

I'm not sure if that's the same white stuff you're talking about. I dampen a cloth with paint thinner to remove it.
 

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Try a little silicone grease on it... or even some Armoral (lightly with a rag) to replenish the plastic. A good source for silicone grease is a swimming pool supply store.
 

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Discussion Starter #7
Mystery solved

I had my chemists at work analyze the white residue. It turns out that it is (R)-(+)-1-(Tert-butoxycarbonyl)-2-tert-butyl-3-methyl-4-imidazolidinone.

A search on the web shows that this chemical is "used to impart durable press properties to cellulosic textile materials". That is, I think that it's what they use to make plastic look textured like leather.

The good news is that it's not mold.
 
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