Fuels and Lubricants is a mandatory subject that Mechanical Engineering students need to study because graduates who will work in industry will later be involved in machinery such as power plants. Most generators use solid, liquid, or gas fuels. College graduates who will become STM teachers must be equipped with this knowledge because STM graduates will also work in industry. Land, sea and air transportation also use engines which definitely require fuel. Lubrication is also important because the effect of engine parts rubbing together creates heat, heat causes engine performance to decrease, especially if it overheats. Therefore, it is necessary to try to cool and lubricate the rubbing parts.