Ford F-150 oil service requirements depend on the engine design, driving habits, and oil specification, with standard service intervals ranging from 7,500 to 10,000 miles or 1 year using Ford-approved Motorcraft engine oil and a genuine oil filter. Severe driving conditions like frequent towing, heavy payload hauling, or extreme winter cold reduce this interval to 5,000 miles or 6 months. The truck's Intelligent Oil-Life Monitor continuously calculates engine temperature, operating hours, and load factors to alert the driver when service is necessary.