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VW Touareg SUV

2202 messages,  Last post on May 14, 2008 at 6:47 PM

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What is this discussion about? Volkswagen Touareg, SUV

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#1876 of 2202 Burn marks on muffler! by username12345 May 31, 2004 (1:04 pm)
I noticed small 1/2" burn marks and a tad of a discoloration to a good amount of my muffler. I am not a gear head so sorry for this but its not the muffler pipe its the main portion thats exposed on the back bottom of the car. I asked the dealer if it was a concern since it was purchased in December. My thought was that if its showing signs of "wear" now what will it look like in a year and god forbid what will happen within the year. The sevice guy told me it was "working" correctly... but I didnt get a good response really that made me feel safe.   My question to all of you is... is this safe? Have any of you encountered this? Is this a VW thing?   Thanks!
#1877 of 2202 by jb_shin May 31, 2004 (8:15 pm)
Ummm, mufflers do get hot, and it does discharge unburnt and burnt fuels, so it will leave some carbon deposit and make it look black. But more to your question, it gets quite hot, so discoloration is more of norm than exception. Replies to this message: username12345 (May 31, 2004 9:18 pm) tidester (May 31, 2004 9:43 pm) username12345 (May 31, 2004 11:23 pm) and 1 more...
#1878 of 2202 Re: [jb_shin #1877] by username12345 May 31, 2004 (9:18 pm)
Replying to: jb_shin (May 31, 2004 8:15 pm) Yeah, I get the idea of the hot as by touch its boiling. But for it to start discoloring and show a yellowish tint seems a little too soon for it to start after a little over a half of a year. I know the response to this is to just talk to the dealer or vw again but just want to know if its something others have had... Replies to this message: tidester (May 31, 2004 9:43 pm) username12345 (May 31, 2004 11:23 pm) tidester (Jun 01, 2004 6:35 am)
#1879 of 2202 Re: [username12345 #1878] by tidester HOST May 31, 2004 (9:43 pm)
Replying to: username12345 (May 31, 2004 9:18 pm) seems a little too soon for it to start   I'm surprised it's gone that long without discoloration. How many miles did you say you have on it?   tidester, host Replies to this message: username12345 (May 31, 2004 11:23 pm) tidester (Jun 01, 2004 6:35 am)
#1880 of 2202 Re: [tidester #1879] by username12345 May 31, 2004 (11:23 pm)
Replying to: tidester (May 31, 2004 9:43 pm) I have about 8k on it now. Just city driving it for about 2 hours a day. Help at all? Replies to this message: tidester (Jun 01, 2004 6:35 am)
#1881 of 2202 Re: [username12345 #1880] by tidester HOST Jun 01, 2004 (6:35 am)
Replying to: username12345 (May 31, 2004 11:23 pm) I've read where people have tried various remedies such as cleansers. Perhaps someone here has had a similar experience and can help you out. Anyone?   tidester, host
#1882 of 2202 re: muffler by sbcooke Jun 01, 2004 (9:54 am)
My Trooper has or had similar discoloration. Spots all over it. The exhaust is supposed to be stainless steel on the trooper, so I assumed it was the way the stainless steel reacts to the heat vs. a standard exhaust.   I haven't looked recently, but sounds similar to what I noticed. I will check tonight. I am not sure if the touareg has stainless steel exhaust, but it may given the fact it is designed to run in high water?
#1883 of 2202 sbcooke by tidester HOST Jun 01, 2004 (10:41 am)
I believe the mufflers are stainless. My understanding is that surface contaminants (oil, etc.) may not be fully removed when the steel is processed and become discolored when heated.   tidester, host
#1884 of 2202 re: muffler by sbcooke Jun 02, 2004 (10:16 am)
I checked mine, but alas it is 5 years old and it looks much more like a "normal" exhaust, however there is some spots near the tailpipe that have the spotting. I seem to remember it looked that way very soon after purchase.   I would guess the discoloration is due to the type of steel. I remember the spotting was on the muffler and on the pipes as well.

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