Besides, you will get two very important benefits from synthetic oil. You will get oil to the engine bearings quicker on cold starts where it is said much of your engine wear occurs and you will get better fuel economy because the engine isn't churning and pumping peanut butter. Another difference between conventional oils and synthetic oils are the size of the molecules that each are made of. They would all be different. However, in a synthetic oil, all the molecules would be alike or all would be the size of a nickel.
Synthetic oils are our future.
They are far superior to conventional oils. They flow at lower temperatures and they don't break down at higher temperatures. But I don't use them because of their cost. If I drove between Phoenix and Tucson every afternoon during the summer, I'd use a full line synthetic as well. Many new GM cars have extended life transmission fluid and antifreeze that under normal conditions, should last 100,000 miles.