JedR had picked me up in the morning from the Diesel Doctor, a local shop specializing in diesel trucks, where I had dropped off the truck to get most of the fluids changed. The coolant is 7.5 gallons and I really didn't want to deal with that much antifreeze. They also changed the transmission, transfer case, front differential and rear differential oil as well as go over the truck for problems such as the serpentine belt, hoses, bearings, seals, etc. This is in anticipation of our road trip next summer. The report was no problems. Not bad for an 11 year old vehicle.
On Thursday, JedR returned and we removed the oil pan to install the deep sump pan and oil pickup extension. The 2015 uses a different method of mounting the oil pump and screen and we ended up calling Terry Crawford, a Ural dealer in southern Michigan, and the maker of the extension. It turns out that there should have been two of the old oil pump bolts with the holes for safety wire included with the order. This would allow the extension to move slightly and not hit the inside of the deep sump pan. The new bolts are in the mail. Excellent service. This is the same deep sump and extension that I had installed on my 2012 during the overhaul.