It’s a sunny, warm day. You are over-exerting yourself with some yard work and happen to notice that your skin is becoming red and flushed. Have you ever really thought about why this happens? In simple terms, our bodies are equipped with mechanisms to maintain our body temperature at a specific level. Your skin turns red because blood vessels are expanding in order to help cool your body down. As well, you will sweat more to open your pores and cool the surface of your skin with released moisture. Just as the human body has a process to regulate temperature, so do our vehicles. Because an internal combustion engine generates significant heat, the cooling system is a vital function of your vehicle designed to keep engine parts cool and the vehicle running properly. In this article, we review some basics about this particular system, what can go wrong, and finally we share some key maintenance tips to avoid problems.