This is always a fun conversation. Sounds like they are trying to take you for a ride. Most of the stuff on that list is no where in the Ford service schedule.
This is what Ford says should be done at 90K miles:
90,000 Mile Service Schedule
Change automatic transmission fluid
Inspect automatic transmission fluid level (if equipped with underhood dipstick)
Replace fuel filter
Perform multi-point inspection
Inspect and lubricate all non-sealed steering linkage,ball joints,suspension joints,half and drive-shafts and u-joints
Inspect brake pads/shoes/rotors/drums, brake lines and hoses, and parking brake system
Inspect complete exhaust system and heat shields
Inspect engine cooling system and hoses
Replace engine air filter
Change engine oil and replace oil filter (Up to 5 quarts of oil. Perform at specified mileage interval or every 6 months, whichever occurs first)
Rotate and inspect tires; check wheel end play and turning noise
I would find another dealership to deal with.
Also, some people keep confusing a fluid change with a flush. They are two different things. A fluid change is just that; drain the fluid and refill. There is no flushing of the entire system. As you can see, Ford doesnt say anything about flushing any system. Change the fluid and keep on riding.
Here is the link for the schedules according to Ford: https://www.flmowner.com/servlet/Con...CalProcessPage