Yup, the same thing happened to me, only I was not pulling a toad. I was traveling along and the engine kept cutting out and finally it died. After I stopped and walked back to rear of MH I saw a trail of fuel behind the rig. I looked under the engine and what do ya know, diesel pouring out of the bottom of the filter. At that point in time I only owned it for two days so I don't know what or who messed with the drain valve. After tightning the valve, waited a few minuets and it started right up.