According to the 1999 Ford E-150 Owner Guide :
With engine oil filter change :
( all the GASOLINE engines take )
( 6.0 U.S. quarts / 5.7 liters of 5W-30 )
if the water and oil levels are fine, then you may have a sensor going out
How do I replace the heater core in a 1999 Ford e150 conversion van
Where is the engine oil cooler on a 1998 Ford Econoline van E150
motor oil
premium engine oil
The fuel pressure regulator on a 1999 Ford E150 Van is located near the carburetor in the engine compartment. It is to the right and in front of the carburetor.
5w30
5w30
6 qt
According to the 2003 Ford E150 owners manual : 5.7 liters ( 6 quarts - U.S. ) with oil filter change
5w30
5w30