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On 15 Feb 99, at 13:23, Jacob Schroeder wrote: > besides a few little easily fixable leaks, i noticed a little black > drip from the bottom side of one of my exhaust tail pipe ¼®Æ oked > inside the tailpipes and the inside of them is covered in black (it used > to be yellow because i got that 4-tip exhaust system where the inside of > the chrome pipes is yellow), what is this black liquid substance. I was > wondering if it is gas that wasn't totally combusted and therefore it > just builds up in there, is it oil due to excessive blowby and oil in > the combustion chamber, or is this all normal? It might be any of the things you mentioned, but it is most likely water, a normal combustion product, mixed with a bit of oil, gas, and soot. If you drove far enough to really warm up the engine, this would pass out of the exhaust without condensing. On a cold engine, it condenses there. Jim - ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ------------------------------------------------------------------- Search old messages on the Web! Visit http://www.vwtype3.org/list/