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Message: <blockquote data-quote="Bill Koonce" data-source="post: 944864" data-attributes="member: 68938">IME almost every product that gets hyped on a Saturday morning auto show is a poor value.  Every dollar spent on marketing is a dollar not spent on R&D and/or better components.Full synthetics are ideal for those who those who can't change their oil every 3000 miles or three months.  They're also ideal for situations where you're pushing your engine to the limit on a sustained basis, like in racing or constant heavy hauling.  In the latter case, changing your oil between 3000-5000 miles is a good idea.  And IMO it's foolish false economy to not change the oil filter with every oil change.Synthetics are good, but not miracle workers.  I'd change my oil at most every 6000 miles or six months (whichever comes first) to cleanse the crankcase of inevitable combustion blow-by oil contamination and other things that degrade the oil over time.</blockquote>