Installing the Oil Pan Make sure the sealing surface of the pan's rim is flat and capable of providing a seal before reinstalling it. Check the flanges of a steel oil pan for warpage. Use a straightedge or lay the pan, flange side down, on a flat surface with a flashlight underneath it to spot uneven edges. Checking the flatness of an oil pan flange. Used with permission of Detroit Gasket - Copyright 1999. Carefully check the flange around bolt holes. Minor distortions can be corrected with a hammer and block of wood. If the flanges are too bent to be repaired in this manner, the pan should be replaced. Once it has been determined that the flanges are flat, install the oil pan with a new gasket. Tighten the screws evenly. Do not tighten any of the screws all of the way until all of the screws are started in their threads. Use an inch-pound torque wrench to torque the screws to specifications. Look this up in the service manual. Specifications usually range from 60 to 150 inch-pounds. This is not very much, but it compresses the gasket and allows it to work properly.
On the underside of the engine.
According to one of Fords websites : For a 1998 Ford Windstar ( 3.0 and 3.8 ) The ( Motorcraft FL-400-S ) engine oil filter is used
According to the 1998 Ford Windstar Owner Guide : With engine oil filter change : ( 4.5 quarts of engine oil ) for both the 3.0 liter and the 3.8 liter engines
It is inside the oil pan on the bottom of the engine block.
4.5 quarts ( 4.3 liters ) with engine oil filter change
The 1998 Ford Windstar Owner Guide shows ( 4.5 quarts with engine oil filter change ) for the 3.0 liter and 3.8 liter V6 engines
According to the 1998 Ford Windstar Owner Guide ( 5W-30 ) With engine oil filter change : Both the 3.0 and 3.8 liter V6 engines take : ( 4.5 U.S. quarts of 5W-30 )
According to the 1998 Ford Windstar Owner Guide : ( 5W-30 ) is the preferred oil for the 3.0 and 3.8 liter V6 engines
According to the 1998 Ford Windstar Owner Guide : With engine oil filter change : Both the 3.0 L and the 3.8 L , V6 engines take : ( 4.5 U.S. quarts / 4.3 liters of 5W-30 )
96 windstar 3.8 oil pressure switch is located under power steering pump. Remove serpentine belt and alternator. Remove PS pump pulley with special puller to get access to PS pump bolts. Drain PS pump and remove PS hoses. Remove PS pump.
4.5 quarts ( 4.3 liters ) with engine oil filter change , according to the Owner Guide
Motorcraft ( FL-400-S ) according to the Owner Guide and fordparts.com