If the engine of a Ford truck is thought of as the vehicle’s “heart,” then the fluids used in the vehicle could easily be likened to the lifeblood of the machine. The owner’s manual of every Ford truck includes the specifications for the various fluids the truck requires, and the 2005 Ford F-150 pickup is no exception.
Regardless of engine displacement, in the 2005 F-150, Ford recommends using Motorcraft SAE (Society of Automotive Engineers) 5W-20 Premium Synthetic Blend Motor Oil. The crankcase and filter of the 4.2- and 4.6-liter engines require 6 quarts, while the 5.4-liter V-8 requires 7 quarts.
All three available engines in the 2005 F-150 have been designed to operate using unleaded gasoline with a minimum octane rating of 87.