Removing Black Diesel (?) Stains

[paulo57509]

Greetings All! I need some help in removing what I believe are black diesel stains from the paint on my daily driver. I had the misfortune of getting stuck behind a delivery truck that was leaking something fierce.



The day after this occurred, I washed the car and whatever that truck was spraying behind it, I couldn`t remove it from the car`s finish. I tried Maguire`s Cleaner-Wax (white stuff I had laying around). Maguire`s would remove some of the stuff off the hood, but a black ghost stain is still visible. It wouldn`t even touch the stuff on the bumper.



BTW, the paint on the hood is in decent shape considering it`s seen both Texas and California sunshine most of it`s life. The paint on the urathane (?) bumper isn`t the greatest, though.



My question is, is there anything that you guys would recommend me trying in an attempt to get this stuff off the finish? I don`t think anything short of a repaint of the bumper would do anything effective there.



The paint is a factory base/clear coat. I`ve attached photos if it`s any help in getting a recommendation.



Thanks to all!



http://i3.photobucket.com/albums/y94/paulo57509/blackspots01.jpg



http://i3.photobucket.com/albums/y94/paulo57509/blackspots02.jpg

[imported_truzoom]

Gasoline on an old rag to do the grime work, then follow up with appropriate paint treatment.

[velobard]

Another approach that get get off some stubborn stains is claying.

[awahl63]

I`d try gasoline and then clay