To use conventional oil or synthetic motor oil-that is the question. It's almost always better to use a synthetic oil over a conventional one. The exception to this rule is if you drive a late-model, low-mileage vehicle and if you drive in a non-demanding way. Otherwise, more and more cars require the quality of a synthetic oil.
Synthetic oil is superior overall-it delivers better lubrication, protection, and cleansing properties. It also has enhanced durability and by using it you can even prolong the life of your vehicle.