Do you want to keep appliances, cars and anything else with a motor/engine running efficiently and for as long as possible? It may be as simple as keeping them clean and completing regular maintenance. I saw this first-hand from my grandma just several weeks ago. She asked me to pull out her refrigerator from the wall in order to clean the back of the refrigerator. At first, I thought she just meant cleaning the floor and accumulated dust on the back of the refrigerator. However, she asked me to remove the grate on the back of the refrigerator and clean the condenser and inner workings of the refrigerator. Though she had just cleaned the refrigerator in a similar fashion the year before, there was already a significant amount of dust and dirt!