Check your onwers manual.
Check link below for Ford Owner's Manual.
I like using Castrol Oil. 10w30 or 10w40.
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According to the 2006 Ford Expedition Owner Guide :
With engine oil filter change :
The 5.4 liter 3V , V8 engine takes :
( 7.0 U.S. quarts of 5W-20 )
If the 4.6 liter is in a Ford Expedition it should be ( 6 quarts ) with engine oil filter change
6 quarts including filter. recommended weight is 5w30 for all climates.
That would depend on which model year : For the 5.4 liter in a Ford Expedition , with engine oil filter change : 1997 to 2004 ( 6 quarts ) 2005 and newer with the 5.4 liter 3V engine ( 7 quarts )
( 7 quarts ) with engine oil filter change for the 5.4 liter 3V engine
The 5.4 liter 3V engine takes ( 7 quarts with engine oil filter change ) The 4.6 liter engine takes ( 6 quarts with engine oil filter change )
In a 2004 Ford F-150 the 5.4 liter 3V engine takes ( 7 quarts ) with engine oil filter In a 2004 Ford Expedition the 5.4 liter engine takes ( 6 quarts ) with engine oil filter
According to the 1999 Ford Expedition Owner Guide : For the 4.6 and 5.4 liter V8 engines : With engine oil filter change : ( 6.0 U.S. quarts of 5W-30 engine oil )
According to the 2005 Ford Expedition Owner Guide the 5.4 liter V8 takes : ( 7 quarts ) with engine oil filter change
According to the 1998 Ford Expedition owners manual : For either the 4.6 liter or 5.4 liter V8 engines : With engine oil filter change : ( 6.0 quarts )
A 1997 Ford Expedition 4.6L V8 has an oil capacity of six quarts.
7.0 quarts , with engine oil filter change ( according to the 2007 Ford Expedition Owner Guide )
According to the 2009 Ford Expedition Owner Guide : With engine oil filter change the 5.4 liter V8 engine takes ( 7.0 quarts )