A pressure washer is a good idea if you've got a place to drain the crud without getting the enviro-nazis on your case. I've been known to sneak into the friendly local coin car wash late at night for such projects and use their engine degreaser option for that kind of stuff. Since you're in Commiefornia, that might be a problem. Once the pan is clean, aiming the spray tubes is simple- - - -scribe an "X" on the side of the oil pan directly across from each nozzle, attach a water hose to the supply tube, and bend the nozzle up, down, or sideways until the stream of water hits the middle of the X. Rinse and repeat for all six nozzles!
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!