The 2001 Ford F-150 / 4.6 liter and 5.4 liter V8 engines use ( 5W-20 ) engine oil according to the Owner Guide
( 5W-30 ) is the preferred oil for the Ford 4.0 liter V6 ( both the OHV and SOHC )
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
According to the 2008 Ford Escape Owner Guide : ( 5W-20 engine oil ) for the 2.3 liter four cylinder and the 3.0 liter V6 engines
According to the 2009 Ford Fusion Owner Guide : For the 2.3 liter four cylinder and the 3.0 liter V6 engines : ( 5W-20 oil is used )
For the 4.0 liter V6 engine ( 5W-30 ) For the 4.6 liter V8 engine ( 5W-20 ) According to the 2004 Ford Explorer Owner Guide
According to fordparts.com For a 1991 Ford Mustang : Both the 2.3 liter four cylinder and the 5.0 liter V8 use the ( Motorcraft FL-1-A ) engine oil filter
5W-20 engine oil in the 4.6 liter and 5.4 liter engines in a 2010 Ford F-150
According to the 2004 Ford Freestar Owner Guide : For both the 3.9 liter V6 and the 4.2 liter V6: With engine oil filter change : ( 5.0 U.S. quarts of 5W-20 engine oil )
For the 4.0 liter V6 , 5W-30 For the 4.6 liter V8 , 5W-20
Use exactly what Ford recommends which is SAE 5w20 any major brand.
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