Depends on what type of engine it is. On a 5.8 liter V8, you must remove the intake manifold, jack the vehicle up, remove the two motor mounts, remove the oil pan bolts, then put a board between the jack and the engine and jack it up to get the pan off. Good Luck!
Where is the engine oil cooler on a 1998 Ford Econoline van E150
According to the 2003 Ford E150 owners manual : 5.7 liters ( 6 quarts - U.S. ) with oil filter change
6 qt
You need to remove the oil pan. Its bolted to the bottom of the engine
You remove the engine block
The most likely culprit is a blown head gasket.
The engine oil pan is bolted to the bottom of the engine
use straight 30 weight detergent
5.5 quarts
it is just above front axial on the drivers side of van
use a funnel and pour it down the dipstick.
5W-30 is the preferred oil , according to the 1996 Ford Thunderbird Owner Guide