5 W - 30 in the 4.0 liter V6 engine
On a 1994 Ford Explorer : You will find the engine oil filter on the passenger side of the 4.0 L V6 engine
on the bottom of the oil pan!
5W-30 is the preferred oil ( that's what I've used in my 1995 Ford Explorer since 1995 )
Bottom of the engine on the oil pan.
5W30 is the preferred oil , but if you live in an area that never gets below the freezing point you can use 10W30
Underneath the engine on the oil pan. Large nut.
If you have the owner's manual, it usually says what kind of oil you need in there.
summer: 10W30 winter: 5W30
For the engine oil , it is on the passenger side valve cover
I'm assuming it would be the same as the 1994 Ford EXPLORER transfer case ( MERCON automatic transmission fluid ) I know that's what my 1995 Ford Explorer uses
( 5W-30 ) according to the 1997 Ford Explorer Owner Guide
On the passenger side of the engine , straight up and down