Ford Thunderbird, DEW (USA)
Power steering fluid capacity & service interval
Ford Thunderbird, DEW (USA) requires power steering fluid with a capacity range between min and max. Service intervals occur every 12 months. The data covers 2 configurations.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| Thunderbird 3.9 V8 (2003-2005) |
|
| Thunderbird 3.9 V8 (2002-2003) |
|
Additional Notes
- The Ford Thunderbird DEW carries a power steering fluid specification expressed as a level range rather than a fixed volume, meaning the reservoir is maintained between a minimum and maximum mark rather than filled to an exact measured capacity.
- A 12-month check interval applies to the power steering fluid under normal use conditions for both the 2002-2003 and 2003-2005 3.9 V8 configurations.
- The 2002-2003 and 2003-2005 3.9 V8 variants share identical power steering fluid service parameters, with no variation in either the level specification or the inspection interval between the two model year groupings.
- A level-based specification of "between min and max" is characteristic of a sealed or semi-sealed power steering system where periodic top-up rather than scheduled drain-and-fill service is the standard maintenance approach.