carrying around a lot of dirt

[RedZ71]

my entire front end is crusted in grease and oil soaked dirt. a couple weekends ago, i scraped off quite a bit while i was replacing my front shocks and brake pads, but there is still lots to go. whats the best way to get rid of this crust? i went by the carwash and tried to powerwash it, but even with the wheels turned all the way to the lock i couldng get in there enough to get good enough angle on it.

any suggestions? if non, then i think im going to have to pick up a wirebrush and manually scrape it out.

and btw, where can i pick up one of those garage-floor drip pans? and speaking of drip pans, what fluid is redish in color? i have a puddle collecting that started while my front end was up on stands for 3 days. (eep!) its kinda back a bit, and i worry that its something from the tranny!