Unlike regular oil, synthetic oil is man-made. Synthetic oil is more stable at extreme high and low temperatures and is a superior lubricant, which prevents cold starts. Vehicles using synthetic oil reportedly can go more than 5,000 miles before requiring a new oil change, compared to regular oil that should be changed every 3,000 miles. The change from regular to synthetic oil is a simple process, but one should evaluate whether or not the car it fit for synthetic oil.