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Thread: What kind of gas do you use in your Regal? Premium or Regular? Reply to Thread
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  Topic Review (Newest First)
07-22-2018 12:17 PM
GS T-Type 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...
09-02-2013 12:44 PM
Alfred8100 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.
08-18-2013 01:36 PM
mluick 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.
08-14-2013 11:56 PM
737Mark 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.
08-06-2013 11:30 PM
cozbyrt
Quote:
Originally Posted by 737Mark View Post
I have a turbo .. use regular all the time. Took it on a trip .. kept the speed around speed limit and got close to 34 mpg. Granted it was flat driving with the only hills being the over passes over roads.
Have you noticed any knocking while using regular? Just asking because premium is recommended for the turbo.
08-05-2013 10:43 PM
737Mark I have a turbo .. use regular all the time. Took it on a trip .. kept the speed around speed limit and got close to 34 mpg. Granted it was flat driving with the only hills being the over passes over roads.
06-22-2013 10:58 PM
sonny615 I use 91
06-07-2013 08:48 PM
SSYCO
Quote:
Originally Posted by thestepchild View Post
E85 was $1.15 per gallon cheaper than unleaded today. I filled up my van on e85 for the first time. I'm down less than 1mpg over 130+ miles so far.
I've been running e85 not much mpg difference,I'm going to try 91 next tank.
06-05-2013 10:05 PM
thestepchild E85 was $1.15 per gallon cheaper than unleaded today. I filled up my van on e85 for the first time. I'm down less than 1mpg over 130+ miles so far.



05-21-2013 06:50 AM
Hitman1970 Premium fuel here. Just got 30.5 MPG average on a 1200 mile trip to Massachusetts and back this weekend. I could never get number like that using Regular.
05-20-2013 11:15 AM
mluick Not true, ethanol is in premium fuel also the EPA has allowed the gas companies to increase the ethanol content from 10% to 15%. You can buy non ethanol premium gas if you can find a service station in your area that sells it. Unfortunatley it costs about $1 dollar more than the ethanol content premium. See link to forum below.
https://www.regalforums.com/forums/bu...ne-e-10-a.html

Mike
02-11-2013 05:11 PM
gary9648 My 2011 2.4L reccomends 87 octane and that is what I use. I would not use higher grades than reccomended because it will not improve the performance and it will certianly drain the wallet faster. I have used 87 for 18,000+ miles with no knocking. Use a top tier brand of gas. I get about 22 mpg around town and 30-32 mpg on long highway trips.
06-10-2012 10:08 AM
kzimmons
Gas

The manufacturer suggests premium and I have a tune so what ever the highest octane i can find i use.
02-24-2012 01:25 PM
cozbyrt I use the premium.
02-22-2012 05:14 PM
TKR7 I usually use 89 octane. Did a couple hundred mile trip this weekend and used 93 octane. Didn't notice any diffference in performance, but I don't drive the car hard. Only have 1400 miles on the car, so still waiting for it to loosen up. I do really enjoy driving this car. Excellent handling response, decent stopping, quite cabin, great sound system, nice body lines. A little more get up would be nice, but overall, very impressed so far.
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