Filling the RV with water

[Road Runner]

I was told when I bought my bus to fill the water tank till it overflowed and done this ever since.

Now en-route i alway loose water and generally arrive with about 3/4 of a tank on the gauge.

Am I overfilling to start with? and if so why do i not just loose the overfill rather that the tank gauge telling me it's only 75% full then.

If I fill it to overflow on the pitch it doesn't loose any water.

Ideas???

 

[Thepips]

I noticed the same thing on our Georgie Boy. I once pulled up a couple of miles after filling the water tank and saw water running out. A quick check confirmed that it was siphoning out an overflow pipe. I can only guess that it's being on the move with the water slopping about is enough to fill the overflow and start the siphoning. It never did it if I filled up on site.

Regards
Doug

 

[pappajohn]

mine always reads 3/4 after filling to overflow.
the guages are never accurate, at least on euro vans.

 

[moandick]

It's exactly as Doug said - siphoning! I had the same problem when standing still, with the Georgetown. If I stopped filling it the moment that it started to overflow, I was OK but if I left it to overflow for a few minutes, it would set up a siphon effect and damned nearly empty the tank. Luckily the tank was in the bedroom and I coiuld actually see it happening.

I think Linda put up a decent explanation on here not so long ago - and also gave a simple rememdy for it - but for the life of me, I can't find it. Mind you, I am suffering from a very bad case of man-flue just at the moment and can hardly see the keyboard to type on - oh, woe is me :Sad:

 

[ruffingitsmoothly]

If you can, attach a pipe to the overflow and raise the end above the tank!

Regards Pat

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[Road Runner]

Definitely syphoning but how do i cure it?

Did it to me this afternoon.

 

[dazzer]

Hi. I just fill ours up to 1/3rd full for travelling. Its enough to overnight with and your not lugging tonnes of water around paying for the fuel to move it oh: