Similar situation for me this spring. Picked up rig from local dealer after having them de-winterize and couple of other items for me. Backed it up and loaded 60 gallons into fresh tank. Moved back to my regular parking space, and "thought" I'd opened valve to let H2O into the water heater.
Thought.......
I'd actually opened the low-point drain and dumped almost all of that 60 gallons in the driveway before I caught it.
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