Skip to content

Mercury Grand Marquis

Maintenance specs for 3 variants of the Mercury Grand Marquis — from 1985 to 2011.

19851991 Mercury Grand Marquis

5.0L V8 (302) · RWD

150 hp / 270 lb-ft

Engine Oil

Weight5W-30
Capacity5 qt
FilterE6AZ-6731-A

Transmission

Type4-Speed Automatic (AOD)
FluidMercon ATF
Drain & fill3 qt
Full capacity12 qt

Coolant

TypeGreen Conventional
Capacity14.1 qt
Shop coolant

Brake Fluid

TypeDOT 3
Shop DOT 3

Power Steering

TypeRecirculating Ball
FluidFord Power Steering Fluid
Capacity16 oz

Differentials

Rear fluid80W-90 GL-5

Fuel

Tank20 gal
TypeRegular 87

Tires

SizeP215/75R15
Pressure (front)35 PSI
Pressure (rear)35 PSI
Shop P215/75R15 tires

Battery

Group size65
CCA650 A
Shop group 65 battery

Spark Plugs

Gap0.044 in
Shop spark plugs

Wiper Blades

Driver18"
Passenger18"
Shop wiper blades

Service Intervals

Oil change5,000 mi
Trans service30,000 mi
Coolant flush30,000 mi
Brake fluid30,000 mi
Spark plugs30,000 mi
Timingchain (no scheduled replacement)
Air filter30,000 mi
Drive belt60,000 mi

19921997 Mercury Grand Marquis

4.6L V8 (Modular) · RWD

190 hp / 265 lb-ft

Engine Oil

Weight5W-30
Capacity5 qt
FilterF2LY-6731-A

Transmission

Type4-Speed Automatic (AOD-E/4R70W)
FluidMercon ATF
Drain & fill3 qt
Full capacity13.9 qt

Coolant

TypeGreen Conventional
Capacity14.1 qt
Shop coolant

Brake Fluid

TypeDOT 3
Shop DOT 3

Power Steering

TypeRecirculating Ball
FluidFord Power Steering Fluid
Capacity16 oz

Differentials

Rear fluid80W-90 GL-5

Fuel

Tank20 gal
TypeRegular 87

Tires

SizeP215/70R15
Pressure (front)35 PSI
Pressure (rear)35 PSI
Shop P215/70R15 tires

Battery

Group size65
CCA650 A
Shop group 65 battery

Spark Plugs

Gap0.054 in
Shop spark plugs

Wiper Blades

Driver22"
Passenger22"
Shop wiper blades

Service Intervals

Oil change5,000 mi
Trans service30,000 mi
Coolant flush30,000 mi
Brake fluid30,000 mi
Spark plugs30,000 mi
Timingchain (no scheduled replacement)
Air filter30,000 mi
Drive belt60,000 mi

19982011 Mercury Grand Marquis

4.6L V8 (Modular) · RWD

224 hp / 275 lb-ft

Engine Oil

Weight5W-20
Capacity6 qt
FilterFL-820-S

Transmission

Type4-Speed Automatic (4R75W)
FluidMercon V ATF
Drain & fill3 qt
Full capacity13.9 qt

Coolant

TypeYellow HOAT (Motorcraft Premium Gold)
Capacity14.1 qt
Shop coolant

Brake Fluid

TypeDOT 3
Shop DOT 3

Power Steering

TypeRecirculating Ball
FluidFord Power Steering Fluid (XT-2-QDX)
Capacity16 oz

Differentials

Rear fluid80W-90 GL-5 (Motorcraft XY-80W90-QL)

Fuel

Tank19 gal
TypeRegular 87

Tires

SizeP225/60R16
Pressure (front)35 PSI
Pressure (rear)35 PSI
Shop P225/60R16 tires

Battery

Group size65
CCA650 A
Shop group 65 battery

Spark Plugs

Gap0.054 in
Shop spark plugs

Wiper Blades

Driver22"
Passenger22"
Shop wiper blades

Service Intervals

Oil change7,500 mi
Trans service30,000 mi
Coolant flush30,000 mi
Brake fluid30,000 mi
Spark plugs100,000 mi
Timingchain (no scheduled replacement)
Air filter30,000 mi
Drive belt75,000 mi