Just finishing up with the LCA replacement and I notice a drop of moisture back by the center diff. Tasted it...definitely ethlene glycol. Looking up for the source I notice the connector for the middle O2 sensor is damp. The front of the LR was elevated and the driveway is inclined a bit so the fluid might have traveled way back there. The surrounding harness feels dry and the coolant reservoir is full. I’m well aware of the dreaded catastrophic crossover pipe leak(s) and we are at 6 years and 54k miles. How should I proceed?