Steps I took:
1. Removed drain plug over a big bucket.
2. Removed oil filter with special to sprinter wrench,
3. Let oil drain overnight and replaced drain plug with new crush washer.
4. Replaced the tiny "O" ring and the large "O" ring on the filter housing. Inserted the new "MANN FILTER no. HU821x" (made in Bosnia and Herzegovina) into the housing. Inserted the combo unit into the housing base and screwed down, no problem. put filter wrench on and snugged it up, replace air filter, added 12 qts. of oil and closed the hood. Did not try it at that time.
Today: Stared the engine to make some radio adjustments, heard weird noise coming from engine compartment, rushed around to open the hood, saw oil being flung everywhere and heard the noise coming from the oil filter. Shut off the engine and stood there looking completely bewildered. Easy job, I had even watched a youtube. There is a puddle of oil under the van in a hole the dogs had dug. The radiator fan spread the oil all over the front of the engine bay. No oil shows on the dipstick, not even a drop of clean new oil. The oil in the puddle was a clear gray (new oil). Old black oil still in the bucket. I took the filter back out and everything seems OK. I don't even know how much oil is still in the engine. What could have gone wrong.
Gene