The Ford F-150 uses 5W-30 or 5W-20 full synthetic oil (engine-dependent) changed every 7,500-10,000 miles. Key services include 10-speed transmission fluid at 150,000 miles (or 60,000 for towing), spark plugs at 60,000 miles (EcoBoost) or 100,000 miles (5.0L), and the cam phaser inspection past 100,000 miles on the 5.0L Coyote. Average annual cost: $650-$950.