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  1. YF (2011-2014) Sonata/i45
    I was already on my consumption test and the dealer told me it was a quart low when I saw them last. The car was due for an oil change so they drained and refilled with conventional 5W20. Less than 1000 miles later, I'm driving home and at lower gears (3rd and 4th I believe) and high speed...
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