Anyone know what the purpose of these tubes are? One has water draining out of it this morning. I suspect this is an overflow for the gray water tank. These are located on the passenger rear behind the LPG tank and below the bathroom area.

Is your AC running? Could be AC condensation drain tubes.

A quick way to tell is to taste it, if it tastes like toothpaste I was wrong, it is your grey water tank

If you mean the smaller drain lines from water tank and Surflow pump, used to empty water system lines when winterizing.

Sloop John B,
Turbo Doc lives in Texas. I think "winterizing" doesn't mean the same thing there, as it does to us.

Definitely it is a drain for the water supply lines. If the water pump is turned on, the flow may increase. Check the valves somewhat above that position, perhaps hidden in the cabinets.

Matt

It gets bone chilling cold in Amarillo, the winds howls and it can snow, so bad they shut I 40 down (no snowplow I guess).

What was that white stuff I saw at Ft Sam Houston in San Antonio???