Soem paint and plastic trim coated with diesel fuel
 

As I stated in a post on the Diesel Discussion board, for some reason I've got diesel fuel coating the exterior of the car behind and below the fuel filler. This includes the plastic trim piece that leads to the bumper.

What's the best way to wash this off without risking damaging the paint? On the plastic piece, how can I get the residue off of that?

Thoughts appreicated...thanks in advance!

Kerosene followed with hot soapy water.