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Old 11-30-2009, 06:57 PM   #3
BackinBlackSS/RS
Go Blue!!!!!
 
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Drives: 2012 Cruze LT
Join Date: Mar 2009
Location: Indiana
Posts: 23,290
Hell yes it could affect it. How much depends on how bad the oil is. Less lubrication means more friction. More friction means the engine is working harder thus using more gas.
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