Engine oil is mainly a lubricant. It runs through your motor and makes sure to protect the moving parts in them so they do not rub together. Engine oil is a very essential element in any moving vehicle to provide both smoothness and protection of the engine. If there is a shortage of lubrication in the engine, the moving parts might shave metals inside the block and might as well seize it completely. Thus, it’s very important to keep the levels normal and check the oil frequently.