Oxygenated vs Nonoxygenated Gas - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 05-18-2008, 03:41 AM   #1
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Default Oxygenated vs Nonoxygenated Gas

Living in rural minnesota isn't the best place to own a SSEi...I live in a small town and the only place that has 91 octane sell Nonoxygenated 91...They have a little sticker by that button that says for boats, snowmobiles collector cars, etc....

This brings up my curiosity. What is the difference, and why can/cant run this in my car (I havent ever bought it, I always go to a gas station in the neighboring town)?
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Old 05-18-2008, 08:16 AM   #2
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If you have the opportunity to run non-oxy, do it. Your engine will reward you with more power and better mileage. It will cost more, but in the long run it will even out.
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Old 05-18-2008, 10:18 AM   #3
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As long as that 91 is unleaded (and the nozzle fits ), run it!

It might give you slightly higher emissions at smog check time, but I strongly suspect you'll pass given how low-emission 3800'* are anyway.

Oxygenates in fuel may have been useful in the late 80'* to early 90'*, but are not needed now given the state of pollution controls in today'* cars. But you know how it is with gov't programs...once Congress mandates something, it never dies
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Old 05-18-2008, 01:13 PM   #4
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Quote:
Originally Posted by sonoma_zr2
If you have the opportunity to run non-oxy, do it. Your engine will reward you with more power and better mileage. It will cost more, but in the long run it will even out.
I actually think that it costs about the same as the regular 91 does in Glenwood.

Quote:
Originally Posted by agrazela

It might give you slightly higher emissions at smog check time, but I strongly suspect you'll pass given how low-emission 3800'* are anyway.
Minnesota doesn't have emissions testing anyway so it doesn't matter.

Thanks guys for straightening this out, I will start filling up with the Non-oxy.
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Old 05-18-2008, 06:02 PM   #5
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go for the non oxy, i do and i get better mileage from it
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