T Turk Joined Feb 3, 2006 Messages 9,103 Location MN Nov 13, 2011 #41 Originally Posted By: MONKEYMAN My 99 SL2 has a black ring on end of tailpipe. Replaced O2 sensor recently. That did not change it. Did you clean it and the black ring came back, or just didn't notice a larger build-up...??
Originally Posted By: MONKEYMAN My 99 SL2 has a black ring on end of tailpipe. Replaced O2 sensor recently. That did not change it. Did you clean it and the black ring came back, or just didn't notice a larger build-up...??
