Regularly changing the oil in your car or truck is one of the most essential things you can do to extend its operational life. Without oil changes, Medicine Hat drivers would put their vehicles at risk for excessive friction, wearing their engines down prematurely. Not only does fresh oil help to lubricate the engine, it also absorbs excess heat, allowing the pistons and valves to work more efficiently. A more efficient car also means more fuel savings, as well as less wear and tear.