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


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Old 10-31-2006, 07:22 AM   #1
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Default would it hurt to run 93 octane in my car?

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.....
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Old 10-31-2006, 07:53 AM   #2
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I think it'd be neither here nor there. The N/As are designed(?) to run on the cheap gas, but I don't think higher octane will hurt (or help)

I seem to get better mileage from the lower octane gas, but I run the midgrade anyways. Partially because it'* the same price as the regular at my favorite station. Partially because part of my brain still thinks higher octane is better, even though the rest of my brain thinks it'* hogwash (for our N/A engines anyways)
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Old 10-31-2006, 08:46 AM   #3
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it wont hurt anything, but you may get worse milage out of the 93 then you will out of 87. (I know I do)
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Old 10-31-2006, 08:46 AM   #4
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it is going to matter very little, with an NA application like ours, it will make a performance difference. You should spend teh extra money to buy from a repuitable gas station instead, to make sure the quality is atleast consistant
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Old 10-31-2006, 01:10 PM   #5
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Quote:
Originally Posted by corvettecrazy
it wont hurt anything, but you may get worse milage out of the 93 then you will out of 87. (I know I do)
I can attest to that.
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Old 10-31-2006, 02:03 PM   #6
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Old 10-31-2006, 05:12 PM   #7
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last year i acidentaly put 93 in the car, but then i wasn't really paying attaention to milage or anything...but yeah, been doin 87, and saturday i filled up /w midgrade 89 to see the effects...and so far its looking worse on MPG oh well
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Old 10-31-2006, 10:37 PM   #8
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I know the L27 (not sure on L36) is designed to run 87. That'* all I run. Always from the same station, to.
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Old 10-31-2006, 10:44 PM   #9
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When I had the L27 it hated premium.
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Old 10-31-2006, 10:51 PM   #10
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Quote:
However, premium grades of petrol often contain more energy per litre due to the composition of the fuel as well as increased octane.
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