So I had noticed a slow leak from the coolant system on my S4 recently. Removed the front bumper etc to check the auxillary radiators as I know they are prone to corrosion and leaking but they both looked OK. Couldn't see anything else obvious so had a local garage do a pressure test. They have found it to be leaking from the rear coolant crossover pipe where it bolts into the drivers side head. Could just be the o ring but they can't be certain. So I'm ordering a new pipe and o rings but just wondering if anyone has changed theirs themselves. I don't have access to a ramp or lift and can hardly see it from the top of the engine so looks like it will have to be done from underneath? Trying to do certain things on the car myself but if this job is a massive pita will just have to shell out on more labour charges. Hoping someone has managed this their self and can give me some advice. Cheers
