James Auton

Hi All, I have a 2014 2.0TDI A3 and in the last few months i've had to top the coolant up from very low on a few occasions after long motorway runs. My heater lacks any significant temperature when it used to be hot within a few minutes due to the aux heater. There are no visible leaks and we've pressure tested the coolant system. It held 13psi for over an hour. Whilst the pressure test was performed the charge cooler was scoped. We thought it looked like small amounts of coolant residue however Darkside Devlopments have said it looks normal. I'm considering getting the EGR cooler replaced as i've read this is a common leak area. What do you think? Did you find you were losing coolant with the blocked matrix with no obvious signs? Grateful for a response as i'm at a loss and don't want to spend out replacing parts by guess work. Thank you