Researching a different truck (1989 Econoline) with a similar straight 6 returned this answer: Both the straight 6 and the V6 take 5 quarts of oil... add an additional quart if changing the oil filter. Not an expert, not certain... its only a RELATED ANSWER.
6.2 Quarts or 5.9 Litres is the oil capacity (including filter).
about 5 qts
6 quarts
5 qt. including filter
6 QUARTS 6 quarts
2.5L and friction modifier additive
how much oil f150 2004 4.6l v8
6 quarts with filter change
6 quarts ( 5.7 liters ) WITH FILTER CHANGE
CAPACITIESEngine, with Wix # 51515 Filter..........6.0 quartsHope This Helps.
6 quarts ( 5.7 liters ) with filter change for the 5.4 L on a 2002 F150
The oil capacity of a 4.6 L in a F150 truck is 6 quarts W Filter, not sure if the application is different if the 4.6L is in other vehicles