One of major reasons for the use of synthetic oil is the advantages of using it in the winter time. In cold temperatures, synthetic motor oil flows easier than conventional motor oil. This means on those frigid mornings when you’re trying to start the car, the engine will crank quicker and easier with synthetic motor oil than with conventional. This saves wear and tear on your battery and starter! Synthetic oil can actually flow in the extreme cold, down to temperatures like minus-70 degrees F. Because of its low pour-point in frigid temps, synthetic oil also helps protect vehicles during cold starts by getting to the top of the motor and throughout so there is less wear inside the engine.