Look into the ngine compartment from under the front bumper, to the right of the license plate. It's kind of up in there but can easily be reached.
Absolutely , the engine in a 2004 Ford Explorer needs an engine oil filter ( or your engine will only last a few seconds while the oil pumps out on to the ground )
The 2004 Ford Explorer owners manual shows , for the 4.0 L SOHC - V6 engine : ( Motorcraft FL - 820S ) oil filter
5 quarts with engine oil filter change
5 U.S. quarts ( 4.7 liters ) with engine oil filter change
( 5 quarts ) with engine oil filter change
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
On a 1994 Ford Explorer : You will find the engine oil filter on the passenger side of the 4.0 L V6 engine
Do not install a Supertech filter on your Ford. Install a quality filter such as Purolator, Wix, or Motorcraft. The filter is too important to go cheap. Change your oil/filter every 5,000 miles.
where is the fill port on a 2004 ford explorer rear end
The engine oil filter is on the passenger side of the engine
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 )