Hi, I've just started my car and there was a low coolant warning on the dash, I moved the car and there was a small puddle beneath it. I rang RAC and they came down and topped it up, checked pressure, it holds but it also leaks a tiny bit through the EGR cooler. What would you estimate the repair cost would be? If it's a steep cost are there any alternatives e.g. I read on another thread that you can do a "Blank and remap". Thanks, guys.