Car is leaking coolant randomly and not consistently. Has been pressure tested with 30LBS of pressure, no leaks, cap has been replaced as well as hoses. Not sure where leak is coming from but definitely coolant.
Same thing here. Pressure tested and mechanic said no leak. Took it to some other guy...ended up being thermostat housing. Mine was inconsistent and leaked whether I drove it or just left it there for a day or 2 of not driving. Mine was leaking down from the AC compressor. Place a cardboard box with a white disposable plate to locate exact location. Mine was. Coming down from here...