These days, it seems like the oil options for your oil changes are limitless - full synthetic, blends, conventional, high mileage, and the list goes on and on. We are frequently asked if it's okay to switch between oils, and how do you know what is okay to use? At Sargeant Service Center in St Augustine, FL we're here to help you answer that question. When it comes to engine oil, the answer to this question can be as complicated or as simple as you want it to be!