Oh, dude, a 2001 Ford Windstar van typically holds around 5 quarts of oil. But hey, don't stress about it too much, just pour some in and you should be good to go. Unless you want to count each individual quart for some reason...
According to the 2002 Ford Windstar Owner Guide : With engine oil filter change ( 5.0 quarts )
( 26.0 ) U.S. gallons in a 2001 Ford Windstar gas tank
The fuel tank holds ( 26 gallons ) on a 2001 Ford Windstar
The 2001 Ford Windstar has the ( 3.8 liter ) over head valve / pushrod V6 engine
According to the 2002 Ford Windstar Owner Guide : With engine oil filter change : The 3.8 liter V6 engine takes : ( 5.0 U.S. quarts of 5W-20 )
On a 2001 Ford Windstar : The 3.8 liter V6 engine has ( 6 engine cylinders )
According to the 1996 Ford Windstar Owner Guide : With engine oil filter change : Both the 3.0 and the 3.8 liter V6 engines take ( 4.5 U.S. quarts of 5W-30 )
15 quarts
I was looking at the 2001 Ford Windstar Owner Guide and it shows : With engine oil filter change : ( 5.44 liters of 5W-20 ) * but the 2002 and 2003 Ford Windstar Owner Guides show 4.7 liters of 5W-20 is used *
( 6 quarts ) with engine oil filter change
Every Windstar ever built was equipped with a V6 engine (3.0 or 3.8 liter), so the answer is 6.
6 quarts WITH FILTER CHANGE