Renault koleos 2009, 2.5L petrol, coolant leaks

[508c5]

Hello,

Are there known issues with the cooling system in this model?

I am losing a bit of coolant evry now naf then, no evident leaks, the radiator is new, oil consumption is normal, cooling system seems to be working fine.

The shortage is evident only in the radiator, the reservoir is full.

Thr car drove about 60,000 miles

Any advice and tips will be welcomed.