Moved on to cleaning and degreasing the engine. Not a bad job in my trucks case. It does have an oil leak and I'm quite sure it's coming from the accessory drive on the front of the engine and the drops get blown back everywhere. Looking at the 4 stack of pulley's it looks like the fan shroud, upper radiator support, fan clutch and maybe even radiator will have to come out to replace the seal. Might even need to pull the hood. Since the engine holds 27 quarts of oil, it can wait until after the Leesburg Christmas Parade. I've got a Nashville, Ga Parade this weekend, a shooting event near Edison, Ga next weekend and a 190 each way trip to Durhamtown later this month. All told, probably around 1,000 miles of road time ahead before I can address the issue. I'll just keep a gallon jug of oil around and all should be well as it's not even enough of a leak to move the level on the dipstick.