If the soot is built up thickly and all of it doesnt wash off with a good car wash, use a good quality paint cleaner- meguiars for example. Apply it to the soot coated area, and buff away with a clean soft cloth- microfiber is a great option.
Then polish, and wax the area treated for protection.

Now if you are feeling ambitious- treat the whole car following the same steps- this way the car will have a consistent shine, and the paint will be clean. White cars can suck up alot of dirt and soot into their finish without looking dirty- depending on how clean your car is, you may be very surprised as to the difference in color from the soot stained area compared to the rest of the car, once you have cleaned, polished, and waxed that one spot.

Some of my favorite products are-

Meguiars paint cleaner
Meguairs Color-X - a polish and wax in 1 step- enhances the pigment in the paint to make the color look its best.
Meguiars NXT tech wax- the easiest wax I have used, producing a beautiful deep and shiny finish.

__________________
Nate

1995 E420
1992 BMW 525i
1984 300D Turbo sold
1993 Volvo 244 sold
1995 Volvo 944T R.I.P!


"The details are not details. They make the product."
-Charles Eames

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