C63 AMG (W204) 2008 - 2015

Weird Paint oxidation?

Old 01-23-2015, 04:22 PM
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2010 C63 P30
Weird Paint oxidation?

So just wondering if anyone else has this on their c63.

The paint on my rear trunk seems very dull. I just tried to clay bar this and it did not have any effect. The dull part of the paint is not as smooth as the shiny part.

My car also had a entire 3m wrap except for this portion. Any thoughts on what caused this? I have a theory it is from exhaust gasses on a rich tune over time. Either that or car was re-sprayed on the rear truck for some reason.


Weird Paint oxidation?-001_zpsxxnaf9oo.jpg

Weird Paint oxidation?-004_zpsakg04def.jpg

Weird Paint oxidation?-006_zpsf0uvub11.jpg
Old 01-23-2015, 04:25 PM
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Originally Posted by AMG Boost
So just wondering if anyone else has this on their c63. The paint on my rear trunk seems very dull. I just tried to clay bar this and it did not have any effect. The dull part of the paint is not as smooth as the shiny part. My car also had a entire 3m wrap except for this portion. Any thoughts on what caused this? I have a theory it is from exhaust gasses on a rich tune over time. Either that or car was re-sprayed on the rear truck for some reason.
Could be build up. Did you try using some polishing paste or 3m hand glaze? I had this hazing on a previous black amg and the hand glaze took it right off.
Old 01-23-2015, 04:34 PM
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Originally Posted by m a x i m u s
Could be build up. Did you try using some polishing paste or 3m hand glaze? I had this hazing on a previous black amg and the hand glaze took it right off.
I have not. I will give that a try. Thanks.
Old 01-24-2015, 07:15 AM
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Not sure where you live but this looks very similar to the damage caused by suncream/sun lotion. Makes a complete mess of the clear coat, however a strange place to get it, usually around door handles, top of boot lids etc. I therefore wonder whether it might be related to the glue/adhesive used to attach the spoiler, leaking down from under it??
Old 01-24-2015, 11:52 AM
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take off the emblems, and give the trunk a polish.

if you can get a paint thickness guage, measure it and see how much clear is on it. that wil let you know if it's been repainted.
Old 01-24-2015, 12:07 PM
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Originally Posted by solekeeper
take off the emblems, and give the trunk a polish.

if you can get a paint thickness guage, measure it and see how much clear is on it. that wil let you know if it's been repainted.

How would a paint thickness gauge tell you just how thick the clearcoat is?
Old 01-24-2015, 12:10 PM
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Originally Posted by HBC350
How would a paint thickness gauge tell you just how thick the clearcoat is?
A good one can check layers of coatings in 50 to 300 nanometers
Old 01-24-2015, 12:42 PM
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Originally Posted by PeterUbers
A good one can check layers of coatings in 50 to 300 nanometers
Yeah, but can they distinguish between each layer so as to be able to differentiate between primer, paint and clear? Or they just measure total thickness between gauge and metal?
Old 01-24-2015, 12:56 PM
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to me it seems suggestive that it's only showing up under your CF spoiler. I also wonder if the adhesive used or even the material on the spoiler itself could be contributing. shot in the dark...
Old 01-24-2015, 12:56 PM
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That looks like the makings of a poorly maintained clear coat finish. The trunk is either re-sprayed (using cheaper clear coat) or the paint has been properly cared for. Do you take your car through the drive in car wash often?
Old 01-24-2015, 01:52 PM
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No It was like this before I installed the spoiler.

I do not take my car through the drive through car wash very often.


Also I bought this car used about 1 year ago and I have only put about 8000kms on it it has 55,000kms.
Old 01-24-2015, 01:55 PM
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Originally Posted by AMG Boost
No It was like this before I installed the spoiler.

I do not take my car through the drive through car wash very often.


Also I bought this car used about 1 year ago and I have only put about 8000kms on it it has 55,000kms.


I'm thinking not factory paint.
Old 01-24-2015, 01:57 PM
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Hmm so sounds like if I want to get this shiny best thing is to remove badges, check paint thickness, and try to do a buff on it with some compound?

Ya my car also does not have accident history.
Old 01-24-2015, 02:47 PM
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Originally Posted by AMG Boost
Hmm so sounds like if I want to get this shiny best thing is to remove badges, check paint thickness, and try to do a buff on it with some compound?

Ya my car also does not have accident history.

The sources most often referred to when researching accident history are nearly worthless IMHO. Relying on them dangerous to your wallet. And them more expensive the car, the more able an owner usually is to have damage repaired without going through insurance.
Old 01-25-2015, 09:52 AM
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This is a common occurrence for paint finishes t hat have not been treated and sealed properly. If you do not have the skills / tools necessary for a good paint correction and polish job. Look for a decent detailer in your area. You do not have to remove the badges. You simply have to use a mild abrasive and the spotting will be removed.

Your detailer will be able to take care of all of this for you. Its a few bucks, but its well worth it for your paint and the over all appearance of the vehicle.

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