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Anyone else have surface rust? Best way to remove?

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Old 02-26-2010, 11:09 PM
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Anyone else have tiny rust spots on door? Best way to remove?

I was shocked to find a few tiny surface rust marks while washing my silver baby today... We've had a harsh winter in KS this year and I have not been able to take it to the carwash as much as usual due to frequent snow and freezing temps. Thus it has had salt and gunk on it much longer than usual...two weeks in between washes.

I was able to get rid of the rust spots with Tarminator for the most part but some spots were rather difficult. Does anyone have a better way to remove surface rust spots that is safe for our MBs? Please let me know!

Last edited by MBnewby; 02-27-2010 at 01:47 PM. Reason: not surface rust
Old 02-27-2010, 12:55 AM
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white and whiter
surface rust where?

MB has rust warranty btw. take it to your dealership and see what they say.
Old 02-27-2010, 12:59 AM
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Sorry, but this could not be surface rust. That would mean that something ate through ceramic clear coat, color coat and a multitude of anti-corrosion layers! I don't think so, not ins so short of time.

It is more likely a deposit on the paint (clear coat, actually) that is just tough to get off. Try a clay bar.

BTW, did you know that the fenders, hood and trunk are aluminum on the W204? Guess what, aluminum does not rust.
Old 02-27-2010, 01:22 PM
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Originally Posted by ptronus31
Sorry, but this could not be surface rust. That would mean that something ate through ceramic clear coat, color coat and a multitude of anti-corrosion layers! I don't think so, not ins so short of time.

It is more likely a deposit on the paint (clear coat, actually) that is just tough to get off. Try a clay bar.

BTW, did you know that the fenders, hood and trunk are aluminum on the W204? Guess what, aluminum does not rust.
Maybe surface rust is not the correct term...they look more like very tiny "rail dust" type spots but they were not there prior to this winter. If I don't want to use clay bar is there any other washes, solvents, cleaners that would work. I used Tarminator but not sure if that is the correct way to do it...it worked but took quite awhile. The tiny rust spots are mostly on the doors.
Old 02-27-2010, 01:51 PM
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Originally Posted by ptronus31
Sorry, but this could not be surface rust. That would mean that something ate through ceramic clear coat, color coat and a multitude of anti-corrosion layers! I don't think so, not ins so short of time.

It is more likely a deposit on the paint (clear coat, actually) that is just tough to get off. Try a clay bar.

BTW, did you know that the fenders, hood and trunk are aluminum on the W204? Guess what, aluminum does not rust.
Are you sure that fenders, hood and trunk are aluminum on the W204?
Thats something unbelievable new to me.
Old 02-27-2010, 03:02 PM
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To check that a part is not ferrous, place a magnet on it and it should not be attracted.

Aluminum oxidizes, like other metals, forming a sacrificial coat. But this is gray, not brown, and hardly noticeably. I think your stain is of vegetable or mineral origin. Nothing is better than a clay bar for the amateur, since it is quite safe to use.

If the stain does not come out with a clay bar, a polishing compound applied with a dual orbital polisher is the ticket. Menzerna polishing compounds are excellent for MB cars.

Old 03-01-2010, 10:32 AM
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Don't Worry!!!

Originally Posted by MBnewby
I was shocked to find a few tiny surface rust marks while washing my silver baby today... We've had a harsh winter in KS this year and I have not been able to take it to the carwash as much as usual due to frequent snow and freezing temps. Thus it has had salt and gunk on it much longer than usual...two weeks in between washes.

I was able to get rid of the rust spots with Tarminator for the most part but some spots were rather difficult. Does anyone have a better way to remove surface rust spots that is safe for our MBs? Please let me know!
You figured it out yourself when you said you removed it with tarminator. I didn't have time to read the other posts, but I am sure there were some responses that would send you into a panic. You are talking about tar stains. They resemble little rust specs. They will come off with WD40, tarminator, cleaner wax or elbow grease. Don't worry. I had some last week too. Clean them off and wax your car. A good wax job will make it easier to remove those spots next time.
Old 03-01-2010, 01:37 PM
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Originally Posted by eminnet
Are you sure that fenders, hood and trunk are aluminum on the W204?
Thats something unbelievable new to me.
Pretty sure mine are good ol steel...
Old 03-01-2010, 02:22 PM
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Another round of ICE
Originally Posted by C300Sport
Pretty sure mine are good ol steel...

Not unless you have custom aftermarket body panels....here are specs copied and pasted from the launch of the W204 in 2008

2008 Mercedes-Benz C-Class
Preliminary Technical Data

C300, C300 4MATIC; C350
Vehicle type - Four-door, five passenger sedan
Body - Steel unit body; aluminum front fenders, doors hood and trunk lid
Aerodynamic drag (Cd) - 0.29, 0.30
Frontal area (sq. ft. / m2) - 2.17, 2.18

Here's the whole article:
http://carscoop.blogspot.com/2007/04...s-c-class.html
Old 04-15-2012, 10:58 AM
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Any suggestions for the amount of rust shown in the below pictures?








Old 04-15-2012, 12:45 PM
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Body shop
Old 04-15-2012, 02:21 PM
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Originally Posted by acela11
Body shop
Oh! Are you sure? I thought a grocery store.
Old 04-15-2012, 05:27 PM
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I thought you asked. If you already know how,then just fix it.
Old 04-15-2012, 05:52 PM
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Originally Posted by tcsekhar
Oh! Are you sure? I thought a grocery store.
No need for sarcasm and rudeness here. You asked for help and it was given. If you dont have the money for a body shop then grind the rust off and paint.
Old 04-15-2012, 07:23 PM
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