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I would try meguiars scratch x first. I use it after wetsanding to polish the small interior parts I paint. If it works for that it should remove the spots.
If I had the same problem, I would start with a solution of 50-50 vinegar and water and wash the spot with a soft cotton cloth.
To the best of my recollection, bird guano is a caustic alkali and not acid, actually the opposite. When I get bird calling cards the next time, I'm going to try the weak acid i.e.vinegar - THANKS FOR THE TIP
I just discovered the exact same thing on the hood of my CTS yesterday (it's Crystal Red). I had three coasts of Zaino on it, BTW.
I spent 30 minutes yesterday with a couple of fairly mild to medium mild compounds. I got most of it out - although I can still see it if I look close at the right angle. BTW, clay bar did nothing to get rid of it.
I'm going to let is sit a few weeks and hit it again if it doesn't go away on it's own.
I just discovered the exact same thing on the hood of my CTS yesterday (it's Crystal Red). I had three coasts of Zaino on it, BTW.
I spent 30 minutes yesterday with a couple of fairly mild to medium mild compounds. I got most of it out - although I can still see it if I look close at the right angle. BTW, clay bar did nothing to get rid of it.
I'm going to let is sit a few weeks and hit it again if it doesn't go away on it's own.
Frustrating!
It won't go away on it's own. I just had to buff out my daughters Saturn Vue with carbon metallic paint using 3M #05996 Perfect-it foam polishing compound and matching gray foam pad. This is non-abrasive and will clear up the "shadow" or dull area. I thought for sure the bird crap had penetrated the clear but it cleaned right up.
I really appreciate the additional suggestions. I have never had this problem before. Previously used liquid glass on 2000 Mag Red C5 as well. Very disturbed by reply about Crystal Red CTS and bird dropping marks as I have 2008 Crystal Red CTS as my daily driver. I am going to try:
1. 50% vinegar solution
2. rubbing alcohol
Clay bar will take it right out. I know this from experience.
Sometimes yes, sometimes no. I can assure you I worked on mine with a claybar several times yesterday and it had zero effect. If the clearcoat is truly etched, a claybar will do nothing for that.
Spots appear to be fading except for a very large one on fender. I tried vinegar and rubbing alcohol without any result. I am going to leave the spots for a week to see what happens.
Thanks everyone
Last edited by Rich Farr; Jun 7, 2009 at 09:30 PM.