Coolant leak

[Alan Hewings]

Just had my S4 serviced and both auxillary radiators are weeping! Is this a common problem?

 

[kite]

Yes...

 

[THERMT]

Yes its quite common. 1 of mine is leaking. When it was in at audi they made a big deal of it and tryed to charge me a fortune to replace it. Unless your loosing loads of coolant i wouldnt bother with it. Ive never had to top mine up so the leak must me pritty small if at all.
How often do you have to top it up?