1996 Mercury Grand Marquis Owner's Manual - Page 179
1996 Mercury Grand Marquis Manual
Page 179 highlights
P (Park) Always come to a complete stop before you shift into P (Park). Make sure that the gearshift is securely latched in P (Park). This locks the transmission and prevents the rear wheels from rotating. RWARNING Always set the parking brake fully and make sure that the gearshift is securely latched in P (Park). RWARNING Never leave your vehicle unattended while it is running. You can tell a column-mounted gearshift is securely latched in P (Park) if the lever is adjacent to the P (Park) and you cannot move it without pulling it toward you and rotating it downward. Traction-Lok Axle (If equipped) This axle provides added traction on slippery surfaces, particularly when one wheel is on a poor traction surface. Under normal conditions the Traction-Lok axle functions as a standard rear axle. Extended use of other than matching size tires on a Traction-Lok rear axle could result in a permanent reduction in effectiveness. This loss of effectiveness does not affect normal driving and should not be noticeable to the driver. 176