A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

rust colored stain on driveway...

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Old 09-22-2004, 06:34 AM
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Default rust colored stain on driveway...

...under my car (97 2.8l). Any ideas what this is from? I searched, but didn't find anything. I think it is from the water dripping from the air conditioner, but why would it stain my driveway? Nothing seems to be leaking.
Old 09-22-2004, 06:42 AM
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Pat
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Default Did you happen to fertilize your lawn recently?

Some fertilizers will do that when they get wet. Could it just be a coincidence you happened to drop some where you normally park? Just a guess....
Old 09-22-2004, 07:47 AM
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Default Re: Did you happen to fertilize your lawn recently?

Nope. It's been getting worse and worse all summer long.
Old 09-22-2004, 08:59 AM
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Default It may be....

Depending on what type of pads you have, it may be the used brake dust rusting. Often after track events, I will wash the wheel wells and just like gold in a stream, the metal falls in the cracks of the driveway.

After a day or three, it starts to rust on the driveway.
Old 09-22-2004, 12:25 PM
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Default Re: It may be....

No race pads, or hard driving for this car. It really seems to be from the water that drips out from the AC. But, I can't figure out why that would be rusty...I'll try to take a picture tonight to illustrate what I'm talking about
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