IMO a clean jeep is a dirty jeep and a dirty jeep is a clean jeep. Although a dirty underside on the jeep is a jeep waiting to break, so I usually hit up a Fire Dept to use their hose or a do it urself car wash to spray off the underside.
Mud on the body is okay (to each his own) but dried mud on the suspension, wheels and brakes is definitely not. If I don't feel like washing it immediately after playing in the goo, I park it over the lawn sprinkler to get the mud off the important parts.
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