2006 ford f150 oil type

Ford recommends using a premium grade 5W-20 engine oil for your F-150.

SAE 5W-20 Synthetic Blend Motor Oil(U.S.)

Ford advised, and was shipping vehicles from the factory with, SAE 5W-30 motor oil in the majority of their engines since the 1990s. Then in January 2002, Ford issued a Technical Service Bulletin now recommending the use of SAE 5W-20 instead of SAE 5W-30 motor oil.

The owner's manual recommends you use 5W-20 synthetic oil for this truck.