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The viscosity index of synthetic base oils is higher than that of conventional petroleum base oils. Pure, Uniform Molecules Form Strong, Stable Lubricants. Petroleum oils have molecular structures that are randomly organized and, consequently, have limited performance abilities.
What is the oil change interval for synthetic oils vs regular oils? You can run a conventional oil 5K miles but you should be able to run a synthetic oil 7500 to 10000 miles (synthetic oil change intervals are longer) A tip on how often change synthetic oil?