
What Does Motor Oil Do? https://hrsynthetics.ca/ The primary functions of motor oil are friction reduction and wear reduction , but motor oil also plays other important roles in your engine. To better understand what motor oil does, it’s important to understand why it’s used, the different modes of lubrication and what specific applications require lubrication. The seven primary functions of motor oil 1. Minimize friction and reduce wear The most common and essential function of motor oil is to minimize friction and wear between components. Lubricants form an oil film on metal surfaces to reduce friction. Reduced friction prevents heating and abrasion on the friction surface, such as engine bearings (shown below). 2. Clean Keeping engine parts clean is another primary function of motor oil. To maintain internal cleanliness, motor oil suspends contaminants within the fluid and prevents contaminants from adhering to components. Base oils possess a va...