Parts for your 2013 Ford Fiesta-Coolant

2013 Ford Fiesta Coolant — what it does, what to use, and when to change it

Coolant absolutely is relevant and used on the 2013 Ford Fiesta. Technical references such as the 2013 Ford Fiesta Owner’s Manual, the Ford Workshop Manual cooling system section, and Motorcraft chemical information specify a liquid-cooled engine that requires ethylene‑glycol based, Organic Acid Technology (OAT) coolant. For this model year, Ford specifies Motorcraft Orange coolant meeting Ford spec WSS‑M97B44‑D (commonly supplied as a 50/50 premix or concentrate mixed with demineralised water).

On this Fiesta, coolant circulates through the engine and radiator to carry heat away, stabilising operating temperature and preventing hot spots. It also protects against corrosion, scale, and cavitation in the alloy block and head, water pump, and heater core. In Aussie and Kiwi conditions—whether it’s a frosty South Island morning or a scorching outback run—using the correct coolant concentration is key to reliable temperature control.

Servicing-wise, Ford’s long‑life OAT coolant is designed for extended intervals. Many market guides cite up to 10 years or around 200,000–240,000 km for the initial fill when the correct Motorcraft Orange is used and not mixed. After any contamination or mixing with other coolant types, shorten the interval to about 5 years/100,000 km. Always check the service schedule for the exact engine fitted (1.0 EcoBoost, 1.5/1.6 petrol, or 1.6 TDCi) and local guidance.

Good workshop practice for a 2013 Fiesta coolant service includes:

• Stick with the specified OAT coolant, avoid mixing colours/types. If mixing has happened, plan an earlier complete change.
• Maintain roughly a 50/50 mix with demineralised water for freeze/boil and corrosion protection.
• Inspect the degas (expansion) bottle, cap seal, hoses, clamps, thermostat housing, and water pump weep hole for leaks or crusting.
• Bleed the system properly: fill via the degas bottle, run the engine with the heater on hot, and top up to the MAX mark once cooled.
• Capacity is typically around 5.5–6.0 litres depending on engine, always measure what drains and refill to spec.

Regular checks under the bonnet go a long way. Keep an eye on the level in the bottle between MIN and MAX, look for pink/orange residue, and address any sweet smell or overheating warning straight away. Using the right coolant and interval helps the Fiesta run cooler, last longer, and avoid expensive heater core or head gasket dramas.

Popular questions about 2013 Ford Fiesta coolant

What coolant does a 2013 Ford Fiesta use?
The 2013 Fiesta is specified for an OAT-type ethylene glycol coolant meeting Ford WSS‑M97B44‑D, commonly sold as Motorcraft Orange. Using the correct spec maintains corrosion protection and long service life.

How often should the coolant be changed?
With the correct Motorcraft Orange and no mixing, many technical guides list up to 10 years or roughly 200,000–240,000 km. If different coolant types have been mixed, service it sooner—around 5 years/100,000 km—and fully flush.

Can different coolant colours be mixed?
It’s best not to. Mixing OAT orange with other chemistries can shorten protection and service life. If mixing occurs, plan a complete drain and refill with the correct coolant and bring the interval forward.