My son just bought a new to him 2012 F350 with 224,000 kms on it, and the 6.2L gas engine.
The oil had just been changed at a Ford dealership using 5w20, and a Motorcraft filter.
By the time he drove it 1,300 kms to my place, it was over a litre down on the dipstick.
He then drove to Vancouver...