premium or regular gas for 1996 impala ss? - Page 2 - Chevy Impala SS Forum
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  #11  
Old 01-02-2013, 02:34 PM
DougDePew DougDePew is offline
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Quote:
Originally Posted by jayoldschool View Post
The heads and the cam.
And the air inflow & exhaust, the tune, etc.
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  #12  
Old 01-02-2013, 04:08 PM
KW Baraka KW Baraka is offline
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Quote:
Originally Posted by vettefella View Post
.......so answer me this...my 95 Corvette LT-1 owner's manual says to use 91 octane or higher. The Impala and Vette engines are very similar, so why the difference?
Heads and cam are different.

The Corvette has a higher static compression ratio, a higher dynamic compression ratio and less optimal quench than the stock Impala engine. As a result, it requires fuel with a higher octane rating.

BTW.....just because they call it "premium", does not mean it's a 'better' fuel.

Jus' sayin'.....

KW
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  #13  
Old 01-03-2013, 03:34 AM
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76 or Chevron most of the time. I split the difference & run their 89 octane. I get a little "ping" with the 87, so that smooths her out. If my choices are limited (or cash is), I have been picking up bottles of octane boost at my local dollar store. That way I can run a cheaper brand & octane (usually Arco) & bump up octane at the same time. Plus, it has injector cleaner in it so an added benefit!! Car now has 134,000 on it.
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  #14  
Old 01-03-2013, 07:18 AM
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The Lazy Destroyer The Lazy Destroyer is offline
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Originally Posted by KW Baraka View Post
BTW.....just because they call it "premium", does not mean it's a 'better' fuel.
True!
Makes for good marketing of product though.
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  #15  
Old 01-03-2013, 12:42 PM
KW Baraka KW Baraka is offline
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Originally Posted by The Lazy Destroyer View Post

True! Makes for good marketing of product though.
Yep......fer sure !

KW
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  #16  
Old 01-04-2013, 02:42 PM
katana1100 katana1100 is offline
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A lot of factors affect octane need, often forgotten are altitude and temperature.
I have tune that calls for premium gas.
I run regular 87. Am I tempting the gods?
I don't think so. I live at 4700' it is 12 degrees now. Still, I run rug in the summer. I hooked up my scanner, floored it a few times, drove around drivin g it easy, driving it hard and saw no knock retard, engine sounded fine to me.
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  #17  
Old 01-04-2013, 02:55 PM
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Quote:
Originally Posted by katana1100 View Post
A lot of factors affect octane need, often forgotten are altitude and temperature.
I have tune that calls for premium gas.
I run regular 87. Am I tempting the gods?
I don't think so. I live at 4700' it is 12 degrees now. Still, I run rug in the summer. I hooked up my scanner, floored it a few times, drove around driving it easy, driving it hard and saw no knock retard, engine sounded fine to me.
I agree. I have a 93 Octane tune and run 93 when I am in FL. Here in CA 91 is premium and I run it once in a while. Most of the time it gets ARCO 89 and every once in a while Chevron or Shell for injector health. I haven't had any problems running 89 but I also am at 3000ft elevation when in CA.
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  #18  
Old 01-04-2013, 04:55 PM
LowMileage91 LowMileage91 is online now
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Default Regular or Premium

I use regular in my 91 Caprice.

When I was a kid (compared to an old retired guy) the choices were Regular or HiTest.
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  #19  
Old 01-04-2013, 05:07 PM
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Quote:
Originally Posted by LowMileage91 View Post
I use regular in my 91 Caprice.

When I was a kid (compared to an old retired guy) the choices were Regular or HiTest.
You must be 'young', it was coal oil or kerosene for me!

.
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Tested a coil by listening to MR.WOODS... ****ing coil WORKS just fine.... ass hole
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  #20  
Old 01-04-2013, 06:54 PM
LowMileage91 LowMileage91 is online now
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Quote:
Originally Posted by The Fooser Guy View Post
You must be 'young', it was coal oil or kerosene for me!

.

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