A couple of weeks ago hauled the 5er into the NC Mountains. Noticed a pretty steady drip of orange liquid dripping off of the base of the AC Compressor and leading edge of the oil pan. Searched for source thinking it was the weep hole in the WP. Eventually got around to relaxing the tensioner, removing the belt from the WP Pulley. Wiped my hand all around the WP flange, nothing! Drier than a popcorn fart in the desert! Took the Bat Wing off, checked the Thermostat Housing, Dry! Finished the trip with a couple of jugs of DI water and parked it. Drove the truck locally to heat everything up for scheduled oil change, leak is greatly reduced even with substantial water in the overflow bottle. While changing the oil I checked the block/pan flange on both sides thinking it could be coming from an EGR Cooler hose, both sides dry! It's a very small amount now, that I feel is from the front of the engine but certainly can't find it with a flashlight and mirror, I don't want to waste 3 more gal of antifreeze. Any ideas?:doh: