u/This_Ad_6047

I have a 2019 Q7 Technik, in the past 6 months I have had two different mechanics identify a coolant leak; I have only had to refil the coolant twice in the past year so it seems to be a slow leak.

The challenge I am having is that one mechanic thinks it’s the water pump the other thinks it the thermostat which requires the super charger to be removed.

Both have shown me pictures of the pink coolant residue but the coolant was also overfilled at one point; so I don’t know if it’s simply from that.

Any ideas?