Here's what some of the worlds leading brands have to say: Mobil 1: Mobil 1 Extended Performance synthetic oil is recommended for oil change intervals up to 15,000 miles or one year, whichever occurs first. That's roughly FIVE TIMES longer than conventional oil change wisdom recommends.
Only Toyota vehicles in which 0w-20 synthetic oil is required (except 3UR-FBE Engines*) have been approved for extended oil change intervals of .
Whether using conventional oil or synthetic oil, an important factor is the engine. My car's manufacturer recommends a 5,000-mile oil change interval (unless, .
If you are using synthetic oil, the interval between oil changes can be extended.. However, you can make your oil last longer and protect your engine by adding