On the 5.4 liter the pressure switch is on the Oil filter housing.
5w30 is recommended from Ford. Wouldn't hurt to stay with a name brand oil.
6 quarts ( 5.7 liters ) WITH FILTER CHANGE
6 quarts with filter change
5w-20 or 5w-30
5w20 synthetic blend motorcraft recommended
6 quarts ( 5.7 liters ) with filter change
The Ford motor company recommends you use 10W-30 weight motor oil in the 1998 Ford F1 50 truck. A heavier weight motor oil can be used in extreme climates.
5 w 20 ( according to the owners manual )
5w30 is recommended.
10W 30 or 5W 30
The oil capacity of a 99 Ford Escort is 4 quarts. Use 5W-30 weight oil. Use a SM rated oil which is the highest rating.