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Old 07-28-2011, 11:43 PM   #1 (permalink)
nmjaxx9
A True Z Fanatic
 
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Join Date: Jul 2011
Location: Middletown, Ct
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Default Premium Mandatory?

Hey yeah so I was at the gas station today and opened my gas door, and inside it said premium unleaded only (93) sooo I was wondering do you have to fill the Z with premium or will mid-grade be good enough? Will it effect engine performance if you go with mid-grade?
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