Fresh water tank

[gmann32]

After I fill my fresh water tank and take off down the road, it seems to siphon itself out. 2008 370 Georgetown. What can I do?

[Dave_Monica]

Any idea where it's siphoning out...vent line, overflow line or gravity fill line?

I recall other G'town owners complaining about this years ago. I believe that they either plugged the vent line or put a valve in line closed for transit.

Dave

[gmann32]

What if my dw uses water in transit, will tank collapse. I think it siphon off the over flow line. I don't think there is a vent line.