8 engine cylinders on your 4.6 liter / 281 cubic inch - V8 engine
A 1992 Mercury Grand Marquis came from the factory with ( 5W-30 )
Yes , the 4.6 liter , SOHC , V8 engine in a 1992 Mercury Grand Marquis is fuel injected
windshield from 1992-1997 will fit all
The most common is 13726548.
Take it to Best Buy
Anything's possible (...but why?)
8 spark plugs
In the front of the engine behind the A/C condensor
The fuel pump is inside the fuel tank.
Presumably however much the gauge reads...
Into the power steering reservoir.
A 1992 Mercury Grand Marquis would have come from the factory with a 50 / 50 mix of distilled water and GREEN color antifreeze ( meeting Ford specification ESE-M97B44-A )