Should be about 4.5 L of oil. Check the stick after.
According to the 1997 Mercury Grand Marquis owners manual : With engine oil filter change : ( 5.0 U.S. quarts / 4.7 litres of engine oil )
6 quarts -------------------------------------------------------------------------------------------- The 2000 Mercury Grand Marquis Owner Guide shows : With engine oil filter change : ( 4.7 litres / 5.0 U.S. quarts )
5w-30 is what I use in my 2000 grand marquis, in 2001 ford started saying 5w-20.
According to the 1997 Mercury Grand Marquis Owner Guide : With engine oil filter change : ( 5.0 U.S. quarts / 4.7 litres of 5W-30 engine oil )
6 quarts will put it right on the mark.
According to the 2006 Mercury Grand Marquis Owner Guide : With engine oil filter change : ( 6.0 U.S. quarts / 5.7 litres of 5W-20 engine oil )
According to the 2000 Mercury Grand Marquis Owner Guide ( 5W-30 ) ( with engine oil filter change , 5.0 U.S. quarts / 4.7 litres of 5W-30 engine oil )
Five with filter change
According to the 2003 Mercury Grand Marquis Owner Guide : With engine oil filter change ( 6.0 quarts / 5.7 liters of engine oil )
Oil Capacity: 6 quarts http://www.wjjeeps.com/engine.htm
With engine oil filter change ( 6 quarts / 5.7 liters ) according to the Owner Guide
( 6 quarts / 5.7 liters ) with engine oil filter change , according to the Owner Guide