According to the 2007 Mercury Grand Marquis Owner Guide :
( 19.0 U.S. gallons / 71.9 litres )
20 gallons
According to my Chilton's Auto Repair manual : A ( 1987 ) Mercury Grand Marquis has a ( 20 U.S. gallon gas tank )
71.9 liters ( 19 U.S. gallons )
As much as the gas tank will hold... ---------------------------------------------------------------------------------------------- On a 1997 Mercury Grand Marquis , the gas tank capacity is ( 20.0 U.S. gallons )
In the gas tank.
In the Gas Tank
The ( 2007 ) Mercury Grand Marquis has a ( 19 U.S. gallon tank )
18
According to my Chilton's Auto Repair manual : A 1988 Mercury Grand Marquis has a ( 20 U.S. gallon ) gas tank
Inside the Fuel Tank. You have to drop the Gas Tank to get to it.
Around 70 liters.
According to the 2000 Mercury Grand Marquis Owner Guide : ( The gas tank capacity is 19.0 U.S. gallons )