After an oil change, 5.25 US quarts. After engine overhaul it's somewhat more but then you wouldn't need to ask.
According to the 2008 Mercury Grand Marquis Owner Guide : With engine oil filter change : The 4.6 liter V8 engine takes ( 6.0 U.S. quarts / 5.7 liters of 5W-20 )
For a 1990 Mercury Grand Marquis : According to my Chilton's Auto Repair Manual : ( 20.0 U.S. gallons with the 5.8 liter / 351 cubic inch V8 ) ( 18.0 U.S. gallons with the 5.0 liter / 302 cubic inch V8 )
( 20 U.S. gallons ) according to my Chilton's repair manual
Yes , the 4.6 liter , SOHC , V8 engine in a 1992 Mercury Grand Marquis is fuel injected
If your Mercury Grand Marquis is a 1991 model or older . The 5.0 liter / 302 and the 5.8 liter / 351 has the distributor at the front of the engine The distributor rotor turns COUNTERCLOCKWISE
On a 1997 Mercury Grand Marquis , 4.6 liter V8 : ( Bank 2 is the drivers side of the engine )
Yes
For a 1995 Mercury Grand Marquis , 4.6 liter SOHC , V8 : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
The 4.6 liter is 281 cubic inches
On a 1999 Mercury Grand Marquis , 4.6 liter V8 : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
On a 1999 Mercury Grand Marquis , 4.6 liter V8 engine : firewall 4 - 8 3 - 7 2 - 6 1 - 5 front of vehicle
The 2005 Mercury Grand Marquis , 4.6 liter SOHC , V8 engine has ( 2 ) timing chains ( 1 timing chain to each cylinder head )