What kind of gas do you use in your Regal? Premium or Regular? - Page 2 - Buick Regal Forum : 2011 Buick Regal Forums
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post #16 of 19 (permalink) Old 08-15-2013, 12:56 AM
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No I have not noticed any knocking. But then, I had another issue where there was some chirping/squirrel type noise - similar to the old loose fan belt sound - that I could only hear with the window rolled down.

Im also told that the computer adjusts the timing so there isnt an issue. The car runs fine.

Ive test drove both the GS as well as the ATS and I do like the boost in power. If I had the extra power then Id run premium.
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post #17 of 19 (permalink) Old 08-18-2013, 02:36 PM
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Using regular unleaded in my non turbo 2.4L regal I'm getting 31-32 MPG on the highway and 25 around town thats with summer blend fuel. I started using non-ethenal fuel unfortunately it's only sold as a premium fuel so it's 1$+ from the regular. Slight increase in milage. Regular grade winter blend fuel the highway milage is 28-29MPG around town 21-22. The car has 15K on it so I use the non ethenol fuel to minimize water contamination when its sitting for extended periods.
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post #18 of 19 (permalink) Old 09-02-2013, 01:44 PM
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Both are good but I mostly preferred premium. Certain two facts on this page are unequivocally the best we have all had. I am currently using 30.5 MPG.

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post #19 of 19 (permalink) Old 07-22-2018, 01:17 PM
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I have always run Super/Pemium in my vehicles, and it what I currently run in my '12 GS - especially since it's been tuned (GM/Buick Stage 1 kit...).

As for mileage, I dont know the specific numbers. But I CAN tell you the I can go from Albany, NY to Providence, RI and back on a full tank...

Josh in NY
'12 Regal GS Stage 1, 6MT, Areoforce Interceptor w/ custom pod
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