FORD 2011 F-550 v.4 - Manual (Page 400)

TRANSFER CASE FLUID (IF EQUIPPED)
1. Clean the filler plug.
2. Remove the filler plug and
inspect the fluid level.
3. Add only enough fluid through
the filler opening so that the fluid
level is at the bottom of the
opening.
Use only fluid that meets Ford specifications. Refer to the Maintenance
product specifications and capacities section in this chapter.
AIR FILTER
Refer to the scheduled maintenance information for the appropriate
intervals for changing the air filter element.
When changing the air filter element, use only the Motorcraft
௡ air filter
element listed. Refer to Motorcraft
௡ part numbers in this chapter.
Maintenance and Specifications
400
2011 F-250/350/450/550 (f23)
Owners Guide, 4th Printing
USA (fus)