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From around the Internet, Google searches and other Prius from forum searches. To me oil consumption is abnormal on a properly maintained vehicle...
Shell and many other brands are known to put extra additives in premium gas, the marketing people realized that the extra cleaning agents combined...
I just traded in a 2010 Ford Focus with 134k miles that i bought new and it never burned a drop of oil with 7500mi oil changes at the dealership....
I work in wholesale fuel for over a dozen different brands, it's all the same gas only the additives are different and how well the station you...
DI only really affects performance and emissions. You don't magically gain an improvement in MPG, you get it through VVT which many manufacturers...