The recommended oil for a 2008 Ford E-150 depends on the engine it has. Ford E-150s from that year could have several different engines.
You MUST check your owner's manual. It will specify the correct oil type (conventional, synthetic blend, or full synthetic) and viscosity (e.g., 5W-20, 5W-30, 10W-30).
Without knowing your engine, I cannot give you a definitive answer. Using the incorrect oil can severely damage your engine.
