Lincoln 2011 MKS - Manual (Page 343)

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 Code
6-speed automatic transmission (6F50) J
6-speed automatic transmission (with
EcoBoost) (6F55)
C
Maintenance and Specifications
343
2011 MKS (mks)
Owners Guide, 1st Printing
USA (fus)