Have had a very small coolant leak, pressure tested the system to 16 psi and no loss of pressure, tried 19 psi, same result. I finally squeezed the radiator hose and found a drip below the middle of the radiator on plastic front cover. Took the cover off and it appeared to becoming down the passenger side of the radiator. Turns out there were a few hairline cracks on the front side of the plastic coolant tank, it was leaking down and over to the middle of the radiator. Gotta love...

2014 coolant leak