Ford 2011 Taurus Owner's Manual page 372

Maintenance and Specifications
TRANSMISSION CODE DESIGNATIONS
You can find a transmission code on
the Safety Compliance Certification
Label. The following table tells you
which transmission each code
represents.
Description
6F50 6-Speed Automatic Transmission
6F55 6–Speed Automatic Transmission (with
EcoBoost)
372
2011 Taurus
Owners Guide, 2nd Printing
USA (fus)
Code
J
C