What Jumbo said!
Most ag equipment companies discourage pressure washing their equipment. The equipment is designed to sit outside year round, work in mud, water and powder dry, but pressure washers push past the seals and will ruin lifetime bearings in just a matter of days in the tillage season.
In the shop, when I would spill oil I would put down some floor dri, and if it wasn't saturated, I would just leave it. After a couple of hours of working on it, it was a fine powder that I would just sweep up, and the floor was cleaner than before the spill. When starting jobs that I knew were going to be a mess, opening up engines, trans, transfer case, diffs, I would put a small pile of floor dri next to the post before I even started, so when I spilled I would just kick it over the spill.