If I go longer between oil change intervals, do I need to change my oil filter more frequently? Or do I need a special filter?
Continue to change your oil filter when you change your engine oil. Special filters or more frequent oil filter changes are not required;, however, some low quality filters may not be capable of protecting your engine throughout an extended oil change interval.
Mobil 1 Extended Performance Oil Filters provide outstanding protection during longer oil change intervals - up to 15,000 miles of Guaranteed Protection when combined with fully synthetic motor oils. Mobil 1 Extended Performance Oil Filters are designed to remove more impurities (99.9 percent Multi-Pass Efficiency Test rating) and hold more contaminants (22.5 grams capacity) than conventional oil filters, which make them ideal candidates when oil drain intervals are extended. All new car warranties remain in effect when Mobil 1 Extended Performance Oil Filters are used. Follow your vehicle manufacturer's recommended oil change intervals.
GM isn't going to waste the 2 week time frame or money to have the oil run through analysis. Even then other oils have just as much metals, minerals, additives etc in it so there is no way to tell. Specially not on these motors. V8 corvettes that blow all the time could be a different story since it costs them a lot in repair money.Run ONLY Dexos spec approved oils or you could be left holding the bill if there is ever an issue! Even if your're under warranty. jus sayin-