* Lubrication: Engine oil lubricates all the moving parts within the engine, reducing friction and wear. Without fresh oil, friction increases dramatically, leading to premature wear and tear, potentially causing expensive engine damage.
* Cooling: Oil also helps cool the engine by absorbing heat generated during combustion. Old, degraded oil loses its cooling capacity, increasing the risk of overheating.
* Cleaning: Oil acts as a cleaning agent, carrying away contaminants like dirt, metal particles, and combustion byproducts. Old oil becomes saturated with these contaminants, losing its cleaning ability and allowing them to accumulate and damage engine components.
* Protection: Oil creates a protective film on engine parts, preventing corrosion and rust. Old oil loses its protective properties, increasing the risk of corrosion.
* Maintaining Engine Efficiency: Clean oil ensures optimal engine performance, leading to better fuel economy and horsepower. Dirty oil can clog passages and restrict oil flow, reducing efficiency and potentially causing damage.
* Warranty: Many vehicle warranties require regular oil changes according to the manufacturer's schedule. Failure to meet these requirements could void your warranty.
For a Ford F150, the specific oil change frequency is detailed in your owner's manual. It typically recommends changes based on mileage or time, whichever comes first, and might vary depending on driving conditions (e.g., towing, off-road driving). Ignoring these recommendations significantly increases the risk of expensive engine repairs down the line.