MK6 CR140 TDI Coolant Leak dissapeared

[freddie2020]

Hi,

CR140 in a 2009 MK6 Golf.

All the coolant was leaking out left side of the radiator.
Would go from 5 liters of filling, to empty within about 1 hour.

It is now suddenly gone away, not just slowed down - not leaking anything at all.

What might cause this?

Thanks

[Dr G]

Calcified coolant can plug small holes.

[freddie2020]

Thanks,
The hole I think was quite large, all coolant would leak out overnight..

[Belle427]

Change the rad if you know its leaking.