Here are some recommendations the members have come up with from their experiences with their Town Cars. We feel this service should be done in addition to the Ford recommended service schedule. If you have any other info to add, please e-mail me.
Transmission
Change fluid every 15,000 miles
Use LubeGard additive to reduce slipping and torque converter
vibrations
Install external transmission fluid cooler
Oil
Change oil and filter every 3,000 miles
Misc
Clean EGR system at 100,000 miles (or earlier)
Clean MAF as needed