The oil filter is on the driver side of the engine next to and below the Power Steering pump.
According to the 1997 Mercury Grand Marquis Owner Guide : ( 5W-30 )
A 1992 Mercury Grand Marquis came from the factory with ( 5W-30 )
According to the 1997 Mercury Grand Marquis Owner Guide : ( 5W-30 ) is the PREFERRED oil
According to the 1996 Mercury Grand Marquis owners manual ( 5W-30 engine oil ) is the PREFERRED oil weight
According to the 1996 Mercury Grand Marquis Owner Guide ( 5W-30 is the PREFERRED engine oil )
No
According to the 2010 Mercury Grand Marquis Owner Guide : With engine oil filter change : ( 6.0 U.S. quarts )
( 5 quarts ) with engine oil filter change ( according to the 1996 Mercury Grand Marquis Owner Guide )
According to the 2004 Mercury Grand Marquis Owner Guide : With engine oil filter change : ( 6 quarts )
According to the 1996 Mercury Grand Marquis Owner Guide : ( 5W-30 is the PREFERRED engine oil weight )
According to the 1997 Mercury Grand Marquis owners manual : With engine oil filter change : ( 5.0 quarts / 4.7 liters of engine oil )
location of oil sencor