What type of brake fluid for Mercury Grand Marquis?
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 )
Once you open the hood look towards the windshield on the drivers and on the right side of the car. You will see a clear oval reservoir with a black cap. It may have the word bendix written on the side. Turn the cap 1/4 turn counter clockwise and lift up on the cap. You should be able to add the fluid then.