Problem was the high pressure oil pump. It is critical to fuel delivery in these diesels. The van is running well now, but is not starting as quickly as it use to and / or is taking a few attempts to start. I found the following bulletin that I still need to try.
"Long Cranking Times at Factory Delivery or After HP Oil System Repair:
If a 6.0 cranks for longer than 2.5 seconds in temperatures above 32 degrees it may be due to air trapped in the HP oil system. To purge the air, drive the truck through 12 hard accelerations from 25-50 MPH. Turn off the engine and allow the truck to sit for 5 minutes. Restart the engine to see if crank time has improved. Crank times of 3-5 seconds in cold temperatures should be considered normal.
If you interested, found this at:
Anyway, van is running. I'm afraid it has a mixture of synthetic and regular oil after the repair at Ford. I was ready for a change of the two remote filters, so I'll just put a fresh supply of synthetic in at the same time.
As for the tow truck tipping back, I'll say my wife and I were very uneasy driving the 65ish miles with our family of four plus the tow truck driver on the bench seat of the tow truck. No seat belts. The weight of the van on back certainly had control of the tow truck, not the other way around. I was afraid to see what the load rating was on the tow truck!