Try some strong household multi-purpose cleaner like 409, etc., and a ScotchBrite scrubbing pad. If you don't get it clean enough to suit you, you'll have the surfaces under the hood scuffed up well enough for a repaint without much more prep work.
Jerry


"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!