You might know when to change your oil, but what about the transmission fluid? If you guessed “when it starts making a grinding noise,” you’re wrong.
Two main types of engine oils exist – conventional and synthetic. Understanding the differences between these two oils will help you answer confidently the next time you have your car serviced and the auto technician asks what type of oil you want in your car.
According to AAA, changing your oil every 3,000 miles was indeed the standard recommendation at one time. However, lubricants and engine technology have come a long way in the last couple decades.