.. is going to depend on which engine you have.
A fuel filter
36mm
According to the 2008 Ford F-350 Owner Guide : With engine oil filter change : ( 15.0 U.S. quarts )
According to the 2008 Ford F-350 diesel supplement : With engine oil filter change : ( 15.0 U.S. quarts / 14.2 litres )
14 quarts plus 1 for oil filter
( 15 quarts ) with engine oil filter change
15 quarts........fill oil filter before puting it on
Headgasket!
6qts with filter
7.3 liter takes 15 qts with filter change. Dont forget to add oil in filter before installing
15 litres including filter
15 quarts of oil are generally oil and filter. its 15W40 diesel oil