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Old 02-09-2010, 03:48 PM   #13
zen
 
Drives: 2011 CTS CPE & 2010 2LT/RS CGM
Join Date: Jun 2009
Location: Nevada
Posts: 337
Quote:
Originally Posted by OBX Bumblebee View Post
The dealership made it a point to tell me I didn't have to run premium in my car, like it was a selling point. At that point I didn't know one way or the other. I'm sure I got a tank of 87 octane with the car.

Ashamed to admit it but didn't find out until recently I needed to be running high octane. I'll have to see if it makes a difference the next time I fill up. Only filled up three times so far anyway....
You don't "have to" run 91 or 93 octane. It is recommended.
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