Well after pressing the clutch in and the air cond turning off in the Nizpro car I thought I better investigate. So I found the earls kit that had done approx 2000ks had started to leak oil at the crimp fitting as it entered the oil filter. The oil had ran down the inside of the clear outer sleeve and as the line had rubbed on the water line and had holed, the oil dripped down onto the air cond connection. The above pic shows the whole kit with brown oil stained line at the bottom of the pic