That depends on how well you maintain it. My 95 is approaching 500K and still running very well.
how to changing engine coolant on a 1993 mercury grand marquis gs.
The engine in a 1993 grand marquis is a 4.6 litre/281 cubic inch.
NO belt in the 302cid engine of a 1988 Mercury Grand Marquis. it is a chain with gears
Bank 2 is the drivers side of the engine on your 1999 Mercury Marquis Sensor 1 is before the catalytic converter ( upstream ) Sensor 2 is after the catalytic converter ( downstream )
I have a 429 with an Edelbrock 750 cfm carburetor which gets about 11 miles per gallon.
On a 1998 Mercury Grand Marquis : Bank 2 is the drivers side of the engine Sensor 1 would be in the exhaust close to the engine before the exhaust enters the catalytic converter ( upstream sensor )
For a 1999 Mercury Grand Marquis : ( the engine air filter is Motorcraft FA-1668 )
At the front of the engine , towards the drivers side of the engine ( power steering fluid reservoir on a 1998 Mercury Grand Marquis )
No.
According to the 2003 Mercury Grand Marquis Owner Guide : With engine oil filter change ( 6.0 quarts / 5.7 liters of engine oil )
On a 1999 Mercury Grand Marquis , 4.6 liter V8 engine : The Original Equipment engine cooling thermostat would be : ( around 192 * Fahrenheit )
According to the 1996 Mercury Grand Marquis Owner Guide ( 5W-30 is the PREFERRED engine oil )