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On my 04 I'm currently using mid grade fuel, am I waisting my money or should I keep it up. The truck is running great but I've only owned it for 2 months and have only ran the mid grade.
 

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I usually put in regular most of the time now. I gave up on super unleaded, I didn't see the point on an unmoded engine. My trailblazer runs on regular and runs perfect.
 

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I have to agree with cableguy, just run unleaded unless your using a tuner/programmer that requires 91+ octane. Now I'm not gonna say its a waste of money because its not THAT much of a diffrence between regular but if thats what you like by all means go for it. :great:
 

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The less ethanol in your gas the better mileage you will get. If you don't need the higher octane so it doesn't ping. You basically are wasting money. I hauled gas for 3 years and learned more than I want to know about it . LOL
 

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Regular unleaded Always.
 

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Where did you guys dig this old thread up!? Haha... Anyway, it's a good topic.

I use regular unleaded and everything is running fine at 20,000 miles. I've read that the others are truly a waste of money (for several different reasons). I'm no expert so I can't verify that... just what I've heard.
 

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I run Chevron 89 and that makes a huge difference in power compared to 89 from like circle K
 
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