If your engine is the heart of your vehicle, oil is its lifeblood. Driving around with dirty oil — or not enough oil — can shorten the life of your engine. Over time, repeated heating and cooling as well as the accumulation of particles can make oil thicker. Not only can this decrease its ability to flow (also known as viscosity), it can leave harmful deposits in your engine and cause extensive damage. Chevrolet, Buick, GMC, and Cadillac Certified Service technicians are trained to understand how your vehicle uses oil and how it monitors oil life. An oil change from a Certified Service expert not only gives you great service, convenience, and a great price, you also receive the added value of knowing that nobody knows your vehicle better. Head to your Chevrolet, Buick, GMC, or Cadillac Certified Service dealer when it’s time for your vehicle’s next oil change.