Start with 6, but it could take up to 7qts.
The 2004 Ford Explorer , WITH A FILTER CHANGE TAKES: 5 American quarts for the 4.0 L V6 6 American quarts for the 4.6 L V8
( 5 quarts ) with engine oil filter change
5 quarts with engine oil filter change
The 2004 Ford Explorer has 12 valves.
5 quarts with filter change for your 4.0 L - SOHC - V6 engine
On a 2004 Ford Explorer , according to the Owner Guide : With engine oil filter change : 4.0 litre SOHC V6 ( 5.0 U.S. quarts of 5W-30 engine oil ) 4.6 litre V8 ( 6.0 U.S. quarts of 5W-20 engine oil )
5.0 quarts
A 2004 Ford Explorer gas tank holds ( 22.5 U.S. gallons )
5 quarts with filter change
The 2004 Ford Explorer's engine produces 210 hp @ 5100 rpm.
V6 ENGINE 5.0 Quarts V8 ENGINE 6.0 Quarts
About 10 quarts