What kind of transmission fluid goes in a 2012 Ford Fiesta?
The 2012 Ford Fiesta uses either a five‑speed manual transmission or a six‑speed PowerShift dual‑clutch automatic. The fluid you need depends on which transmission your car has: manual transmissions use a gear oil, while the PowerShift automatic requires Ford’s dedicated dual‑clutch transmission fluid.
Fluid requirements by transmission type
Below are the two transmission types offered in that model year and the recommended fluids for each.
- 5‑Speed Manual Transmission: Use a high‑quality gear oil rated for GL‑4 service, typically 75W‑90 (synthetic recommended). Do not use engine oil or ATF in the manual gearbox.
- 6‑Speed PowerShift Dual‑Clutch Automatic: Use Ford’s dedicated PowerShift (Dual Clutch Transmission) fluid. This is a specialized synthetic fluid designed specifically for the PowerShift system and is not interchangeable with standard ATF or other Dexron/Mercon fluids. Always verify the exact specification in your owner’s manual or with a Ford dealer for your VIN/market.
When in doubt, always confirm the precise specification for your vehicle's market and VIN via the owner's manual, a Ford dealer, or the official Ford parts site, since fluid requirements can vary by region and production run.
How to identify which transmission you have
Before purchasing fluid, confirm your transmission type to avoid mistakes. Use these checks to identify it:
- Look at the gear selector and any badges on the transmission housing. A PowerShift badge typically indicates the six‑speed dual‑clutch automatic.
- Check the vehicle’s model code or VIN on the driver‑side door jamb or under the hood label; the documentation or a dealer can decode it to reveal the transmission type.
Knowing your exact transmission ensures you buy the correct fluid and follow the proper service procedure.
Maintenance notes and practical tips
Keeping the correct fluid in your Fiesta’s transmission supports smooth shifting and long life. Use these practical guidelines when servicing:
- Always use the fluid specified for your transmission type—Ford PowerShift fluid for the automatic and GL‑4 75W‑90 gear oil for the manual.
- Refer to the owner’s manual for capacity, fill procedures, and any special service intervals. If your vehicle is exporting to a different market, fluid specifications may differ.
- Have fluid changes performed by a qualified technician if you’re not comfortable performing the service yourself.
Using the wrong fluid or neglecting the correct service can lead to shifting issues, reduced performance, or damage to the transmission internals.
Frequently asked considerations
Bottom line: identify your transmission type, use the manufacturer‑approved fluid, and consult official sources for the exact specification. This approach helps preserve the Fiesta’s shifting reliability and drivetrain health.
Summary: For a 2012 Ford Fiesta, the fluids you need depend on the transmission: the 5‑speed manual requires GL‑4 gear oil, typically 75W‑90; the 6‑speed PowerShift automatic requires Ford’s dedicated PowerShift dual‑clutch transmission fluid. Always verify the exact specification for your market and VIN in the owner’s manual or with a dealer to avoid cross‑spec contamination.
