Five.
5 U.S. Quarts
According to the 2003 Lincoln Town Car owners manual : With engine oil filter change : ( 6.0 quarts )
According to the 2001 Lincoln Town Car owners manual : With engine oil filter change : ( 5.0 quarts ) of 5W-20
The 2001 Lincoln Town Car Owner Guide shows : With engine oil filter change ( 5.0 quarts )
The 1999 Lincoln Town Car Owner Guide shows : With engine oil filter change ( 5 quarts )
According to the 1999 Lincoln Town Car Owner Guide : With engine oil filter change : ( 5 quarts ) of 5W-30 engine oil
According to my Chilton's Auto Repair Manual : A 1991 Lincoln Town Car holds ( 18.0 U.S. gallons )
The 4.6 liter takes 5 quarts unless it is the police version that takes 6 quarts.
My 89 Lincoln Town Car has a 5.0 liter engine and takes 5 liters of oil.
4.5 quarts is about what I use when changing oil and filter in mine.
According to the 2003 Lincoln Town Car Owner Guide : With engine oil filter change : ( 6.0 U.S. quarts of 5W-20 engine oil )
I just replaced my transmission on my '87 Town Car and PartSource told me that I need 11.6 L (or 12.25 quarts) of fluid.