Section 1446 (Engine Cooling System (Except Hybrid)): Specifications

2010 Mercury Mariner Hybrid, AWDSECTION Specifications
WARNING: This page is about a different car, the 2011 Mercury Milan, 2011 Lincoln MKZ, and 2011 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
MATERIAL SPECIFICATIONS

Item Specification Fill Capacity
Motorcraft® SAE 5W-20 Premium Synthetic Blend Motor Oil (US); Motorcraft® SAE 5W-20 Super Premium Motor Oil (Canada)
XO-5W20-QSP (US); CXO-5W20-LSP12 (Canada)
WSS-M2C945-A -
Motorcraft® Specialty Green Engine Coolant VC-10-A2 (US); CVC-10-A (Canada) WSS-M97B55-A 2.5L engine 8.1L (8.6 qt); 3.0L engine 9.2L (9.7 qt); 3.5L engine 9.5L (10.0 qt)
Motorcraft® Premium Cooling System Flush VC-1 ESR-M14P7-A -
GENERAL SPECIFICATIONS

Item Specification
Pressure Tests 
Complete cooling system maximum pressure 124 kPa (18 psi)
Pressure relief cap 89-124 kPa (13-18 psi)
Radiator (out of vehicle) 138 kPa (20 psi)
Thermostat Opening Temperatures 
Thermostat starts to open (2.5L) 80-84°C (176-183°F)
Thermostat starts to open (3.0L) 84-88°C (183-190°F)
Thermostat starts to open (3.5L) 79.5-83.3°C (171.1-181.9°F)
Thermostat fully open (2.5L) 97°C (207°F)
Thermostat fully open (3.0L) 99°C (210°F)
Thermostat fully open (3.5L) 94.5°C (202.1°F)
TORQUE SPECIFICATIONS

Description Nm lb-ft lb-in
Block heater 40 30 -
Cooling fan module bolt 7 - 62
Coolant inlet pipe bolts 10 - 89
Coolant inlet pipe hose clamp 5 - 44
Coolant pump bolts (2.5L) 10 - 89
Coolant pump bolts (3.0L) 10 - 89
Coolant pump bolts (3.5L) a - - -
Coolant pump housing nuts and bolts (3.0L) 10 - 89
Coolant pump housing studs (3.0L) 4 - 35
Coolant pump pulley bolts (2.5L) 20 - 177
Degas bottle-to-fender bolt and nut 9 - 80
Engine oil filtera - - -
Oil pan drain plug (3.5L) 27 20 -
Primary timing chain guide bolts (3.5L) 10 - 89
Primary timing chain tensioner bolts (3.5L) 10 - 89
Thermostat housing bolts 10 - 89
Transmission cooler tubes 30 22 -
Upper radiator support bracket bolts 10 - 89
Variable Camshaft Timing (VCT) oil control solenoid housing bolts (3.5L)a - - -

a Refer to the appropriate procedure in this service information.

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.