Coolant Leak b7 RS4

[PA_RS4_Minty]

Hey Guys
Just recently saw a small coolant puddle under the RS4 after driving her. Coolant expansion tank has already been replaced recently and can confirm that there is no leak coming from there. I got the ole girl on my lift and had a few minutes to spare before heading to the in-laws (wish me luck!!) to start looking for the leak location. See the photos attached. Gonna pressure test tomorrow to help diagnose where the leak is coming from but it’s definitely hard to get a good visual at the moment. I should note she’s only got about 40k on her. Any help or guidance is appreciated. Thanks guys

[alex760]

Auxillary rads are a common favourite. iirc it won't always show up unless it's after a fairly spirited drive as they are thermostatically controlled. Could be wrong though it's been a while since I looked.