Thread: Where does the water GO

Head sounds like the most likely culprit to me. can't be evaporation because it's a sealed and pressureised system.

Could be a minor leak, but a pressure test would have shown it surely, as well as evidence of the leaked fluid.

The level should only rise when you remove the cap, when the motor is hot.

Baz.

as baz says if you take off the cap you release the pressure which allows things to contract pushing the water back into the tank. thats why most tanks you fill when cold. mine probably drops an inch or 2 when hot but in the morning its back up to the line that it should be... this is why motors have 'expansion' tanks

if yours is doing this... its all good.. if its not.. well further investigation.. or get a td5 engine saver alarm (see LandyAndys thread) just for a bit of peice of mind!

Thanks

Steve

It could be that there were some air spaces left in the radiator, which were displaced with water as the system went through a few heat-cool cycles. It's common to top up again a few days later (especially if the heater is on, or the plugs haven't been removed).
/Damien