According to the 1996 Mercury Grand Marquis Owner Guide :
With engine oil filter change :
( 5 quarts / 4.7 liters of engine oil )
* the engine oil dipstick is used to determine the exact fill requirement *
driver side of motor in middle
5W-30
5 w 30
The 2006 Mercury Grand Marquis owners manual shows : The use of synthetic or synthetic blend motor oil is not mandatory - the oil just has to meet Ford specifications
5w-30 is what I use in my 2000 grand marquis, in 2001 ford started saying 5w-20.
( 5 quarts with filter change ) according to the 1999 Mercury Grand Marquis owners manual
According to the 1997 Mercury Grand Marquis owners manual : With engine oil filter change : ( 5.0 quarts / 4.7 liters 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 )
5 Qts. I suggest 10W-40
According to the 1997 Mercury Grand Marquis Owner Guide : ( 5W-30 ) is the PREFERRED oil
A 1992 Mercury Grand Marquis came from the factory with ( 5W-30 )
According to the 1997 Mercury Grand Marquis Owner Guide : ( 5W-30 )