I got that first picture along with an email this morning saying that it was another Deere combine that was on fire and the owner was trying to put it out with a garden hose while waiting for the fire department  .  Everybody that reads on here regularly knows that those things are a fire hazard just sitting around, so you're insurance man probably told you to keep it wet whenever it's not in use.

All kidding aside, I think a careful wash job helps keep equipment a lot nicer and sure makes maintenance easier.

Mike