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Debby (not verified)    November 24, 2013 - 8:39PM

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My 2011 Durango had to have the cylinder head replaced which seems to be a known problem with the Penstar engine. I had it replaced ever since my gas mileage has went down by 3 miles per gallon at minimum has anybody had the same gas mileage problem since having the cylinder head replaced on a penstar engine?

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