removable panel under the steering column, there's two big black screws that come out
5300lbs.
Yes, a person can get a diagram of the PCV valve location in a 1989-1999 Mercury Grand Marquis. This diagram would be located in the maintenance books found in auto part stores.
It may not have one but if it does of course it will be located somewhere inside the glove box.
left side of dash
( 20 U.S. gallons )
On a 1989 Mercury Grand Marquis : The automatic transmission fluid level dipstick should be in the engine compartment , near the firewall ( the metal wall that divides the engine compartment from the passenger compartment ) just towards the passenger side of the vehicle ( where the rear of the engine connects to the transmission )
at the junk yard
According to my Chilton's Auto Repair manual : For a 1989 Mercury Grand Marquis : With engine oil filter change : Both the 5.0 / 302 and the 5.8 / 351 take ( 5.0 U.S. quarts )
If you don't see it under the hood, then look under the car just in front of the rear wheel.
its on the passenger side front near the front tire
It is part of the power steering pump assembly.
Follow the Youtube instructions.