This has been an ongoing problem on all three of my wife's white Gen 2 Tacomas (2005, 2011 and 2015). We live on a gravel road and every winter we end up with a gritty stain on the fender above the exhaust pipe. I think that it is a mixture of exhaust condensation and dust. After ten years you would think that Toyota would have a fix for this. They don't.
Clay, solvents and polish do NOT remove the stain. It's almost like another layer of paint. . The only thing that has worked for me is to buff off the stain using Meguiar's Ultimate Compound applied with a three inch pad on a PC. Then I then apply a coat of Meguiar's Ultimate Wax. I do this a couple of times during the winter months. Anyone have a better idea? I don't want mess with changing the exhaust.
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