Parts for your 2012 Ford Falcon-Coolant

2012 Ford Falcon coolant: what it does and how to look after it

Coolant is absolutely fitted and required on the 2012 Ford Falcon (FG/FG MkII). Ford Australia’s owner’s manual and service literature for the 4.0L I6, EcoLPi LPG, 2.0L EcoBoost, and V8 variants specify a liquid-cooled system using ethylene glycol–based, long‑life coolant that meets Ford’s WSS‑M97B44‑D specification. That’s the technical baseline the car was designed around.

In this Falcon, coolant does more than just stop overheating. It transfers heat efficiently from the engine to the radiator, resists boiling on hot Aussie and Kiwi summer days, and provides freeze protection in colder regions. Just as important, the additive package guards alloy heads, radiators, and the water pump from internal corrosion and cavitation, and it lubricates the pump seal to help prevent leaks.

For servicing, Ford’s long‑life fill is typically scheduled for extended intervals (commonly up to 10 years or around 200,000 km under normal conditions, per Ford service schedules of the era). Given the age of any 2012 Falcon now, a replacement is sensible if there’s no clear history. Use a coolant that meets the Ford WSS‑M97B44‑D spec (as listed in the FG/FG MkII owner’s manual and on the expansion tank). The colour is not a spec—chemistry and compliance are what matter.

Level checks should be done stone cold at the expansion tank’s COLD FILL line. If topping up, use premix that meets the spec, or mix concentrated coolant with demineralised water to about 50/50. Avoid ordinary tap water, minerals can scale and pit the system. If changing coolant type or the old stuff looks rusty, oily, or sludgy, do a proper flush with demineralised water before refilling.

Handy tips for this Falcon’s cooling system:

• Bleed air properly after refilling—heater set to hot, engine idling, then recheck the level under the bonnet once cooled.
• Inspect hoses, clamps, thermostat, radiator end tanks, and the cap, replace tired parts during a coolant service.
• Watch for sweet smells in the cabin (heater core) or dried residue around the water pump and hose junctions.
• Dispose of old coolant responsibly—it’s toxic to pets and wildlife.

Following Ford’s spec and good workshop practice keeps the Falcon’s temps steady, the heater working, and the alloy bits happy for the long haul.

Popular questions about 2012 Ford Falcon coolant

What coolant specification does a 2012 Ford Falcon use?
Ford calls for a long‑life ethylene glycol coolant meeting WSS‑M97B44‑D (as set out in the FG/FG MkII owner’s manual and service information). Many vehicles of this era use an OAT/HOAT‑type long‑life coolant. Always match the spec on the expansion tank and never choose by colour alone.

How often should the coolant be replaced?
Ford’s long‑life fill is typically up to 10 years or about 200,000 km in normal use. Severe duty, contamination, or mixing coolant types shortens that. For a 2012 car with unknown history, replace now, then test annually and stick with the correct spec for future top‑ups.

Can tap water be used to mix coolant?
Best practice is demineralised or deionised water. Tap water can introduce minerals that cause scale and corrosion, especially in hard‑water areas. Using a correct premix or making a 50/50 mix with demineralised water protects the Falcon’s alloy and cooling components.