would it hurt to run 93 octane in my car? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-31-2006, 10:57 PM   #11
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Wow. I am impressed. I have never seen so many people actually notice that premium, when not needed, does not help. I know soooo many people that think premium must give better milage and/or it cleans the engine.
The only time you need premium is if you are fighting knock.
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Old 10-31-2006, 11:23 PM   #12
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I started pumping 89 and I swear I've noticed a smoother pick up and I've imagined a bit more power. I'll have to check the mileage...
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Old 11-01-2006, 02:59 AM   #13
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i used Shell premium fuels for 6 months straight...my gas mileage dropped about an avg of 4-5 mpg and did not see any spectacular increase in power...or at all...I currently use Regular from BP/Amoco only and have been getting the best mileage overall than from ANY other station in my area.

93 Octane from Shell = 17-18 MPG
87 Octane from Shell = 21-22 MPG

87 Octane from BP = 22-23 MPG

89 Octane from Citgo = 21-22 MPG
87 Octane from Citgo = 21-22 MPG

Just to give you an idea.
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Old 11-01-2006, 07:39 PM   #14
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Default mpg sucks sometimes

i used shitgo 110 octane in the bonny i used 10 gals at 4.75 a gal and got 13-15 mpg
i use 87-89 every other time i fillup i average 23-25 mpg with hess or cito gas nice gas mileage my neighber get 16-19 with a mini van they suk they r pi$$ cuz i got better mileage then they do


my bonny is a 93
there van is a 01 they still suk lol
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Old 11-01-2006, 09:50 PM   #15
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Default Re: would it hurt to run 93 octane in my car?

Quote:
Originally Posted by 19bonnie95
Would it be bad to run 93 octane in my 1995 bonie series 2 N/A or would it be good or would it matter just wondering.....
The ONLY thing running premium gas in your Bonneville hurts is your wallet. Drive on.
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Old 11-01-2006, 09:58 PM   #16
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Higher the octane, the more energy it takes to get it to fire off. That'* why higher octane doesn't detonate or knock like the lower octane.

In turn, less performance/gas mileage in an engines designed for the lower.


Patrick
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Old 11-01-2006, 11:22 PM   #17
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Higher compression = higher octane.

Power adders (SC or Turbo) = higher octane.

If you have neither, stick to regular grade and mid if you have money to burn.
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