1998 f150, 4.6, 185k.
Oil consumption is virtually nil (max half quart per 5k mile oil change
owned since 71k, proper oil changes, commuter driven.
slick 50 or similar run every 3rd oil change since 100k.
Biggest problem was coke buildup in egr circuits. Complete obstruction. Engine still quiet mechanically, I expect 300k from the engine w/o an issue. Similarly a 2002 5.4 burns 1-1.25 qt per same interval, owned similarly in mileage and at 135k.
2001 Explorer 5.0, 241k, unknown maintenance schedule prior to 237k.
Burns a quart to 1.5 per 5k interval even with Lucas, etc.
My experience with various engines, a direct answer for the OP and a couple of comparisons. My experience with hard driven commercial truck Modular’s since 1997 has been a quart or less per 5-7.5k interval with the 5.4 “always” topping the chart for consumption and the 4.6 “always” being half the consumption of the 5.4.