The Ford 6F55 6-speed automatic transmission has been assembled at the Michigan plant since 2008 and is installed in front- and all-wheel-drive models with turbocharged Cyclone engines. This automatic transmission is known in General Motors vehicles under its own designation, the 6T80.
Specifications
| Type | automatic transmission |
| Number of gears | 6 |
| Type of drive | front / all wheel |
| Engine volume, l | up to 3.7 |
| Torque output, Nm | up to 550 |
| Recommended oil | Mercon LV |
| Oil capacity, liter | 11.0 |
| Partial replacement, liter | 5.0 |
| Maintenance | every 60 000 km |
| Gearbox lifespan, km | ~250 000 km |
| Weight, kg | 107 |
Gear ratios Ford 6F55
Using the 2015 Ford Taurus SHO with a 3.5 EcoBoost turbo engine as an example:
| Main | 3.16 |
| 1st | 4.484 |
| 2nd | 2.872 |
| 3rd | 1.842 |
| 4th | 1.414 |
| 5th | 1.000 |
| 6th | 0.742 |
| Reverse | 2.882 |
Using
The transmission was installed on:
- Ford Edge 2 (CD539) in 2014 – 2018;
- Ford Explorer 5 (U502) in 2010 – 2019;
- Ford Flex 1 (D471) in 2010 – 2019;
- Ford Fusion USA 2 (CD391) in 2016 – 2020;
- Ford Taurus 6 (D258) in 2009 – 2017;
- Lincoln Continental 10 (D544) in 2016 – 2020;
- Lincoln MKS 1 (D385) in 2009 – 2016;
- Lincoln MKT 1 (D472) in 2009 – 2019;
- Lincoln MKX 2 (U540) in 2016 – 2018;
- Lincoln MKZ 2 (CD533) in 2015 – 2020.
Disadvantages of the Ford 6F55 gearbox
- This is a fairly reliable automatic transmission, but it’s only installed with particularly powerful turbo engines;
- And in overly active owners, the torque converter lockup clutch wears out quickly;
- This dirt then clogs the solenoid block, which leads to a decrease in oil pressure;
- The drop in pressure results in rapid wear of the bushings, and sometimes even the oil pump;
- The typical problem with the locking clutch breaking off, which is typical for this series of transmissions, is almost never encountered here.
