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What octane gas for SC'd Cobalt?

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Old 03-30-2007, 08:16 PM
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What octane gas for SC'd Cobalt?
I know little to nothing about my new Cobalt

is there a certain octane gas I should use?
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Old 03-30-2007, 08:22 PM
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For the SS / SC GM recommends 91 octane.
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Old 03-30-2007, 08:22 PM
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Stock? you can use anything.

Is this a real question?
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Old 03-30-2007, 08:26 PM
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Originally Posted by BallsoutBalt
Stock? you can use anything.

Is this a real question?

yes it is a real question

I bought a new GM product not very long that GM claimed I could ONLY use the low octane gas at the pump

Im not trying to destroy a brand new car
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Old 03-30-2007, 08:43 PM
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Read your owner's manual front to back You'll find more answers to questions without having to ask.
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Old 03-30-2007, 08:44 PM
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Originally Posted by Cobalter LS
Read your owner's manual front to back You'll find more answers to questions without having to ask.
I like websites... not books



hth
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Old 03-30-2007, 08:45 PM
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the book says its best to use premium but you can use lower octane at a loss of considerable power
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Old 03-30-2007, 08:47 PM
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if you use lower octane and your engine starts knocking then just switch to a higher octane. Or just go with 91 from the start
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Old 03-30-2007, 08:48 PM
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Originally Posted by blackgloves
I like websites... not books



hth
That I understand....but on the web you can get just as many wrong answers as right. The manual will be your best source for correct information.
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Old 03-30-2007, 08:49 PM
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Originally Posted by OniMirage
the book says its best to use premium but you can use lower octane at a loss of considerable power
I gave you rep for this thank you
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Old 03-30-2007, 08:55 PM
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Originally Posted by blackgloves
I like websites... not books



hth
Keep that ignorant attitude about not reading an owners manual and you'll find out soon enough that you WILL be destroying a brand new car.

SS Supercharged cars REQUIRE 91 octane to run correctly. Good luck and keep her in one piece. And PLEASE read the owners manual.
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Old 03-30-2007, 09:06 PM
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Originally Posted by JohnnySasakiMGS
Keep that ignorant attitude about not reading an owners manual and you'll find out soon enough that you WILL be destroying a brand new car.

REQUIRE 91 octane to run correctly. Good luck and keep her in one piece. And PLEASE read the owners manual.

Ive kept this "ignorant" attitude on EVERY car ive bought and done just fine

thank god for REAL people (on forums) and not smart asses
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Old 03-30-2007, 09:08 PM
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Originally Posted by blackgloves
yes it is a real question

I bought a new GM product not very long that GM claimed I could ONLY use the low octane gas at the pump

Im not trying to destroy a brand new car
Here's the thing, you CAN use anything you want. However; I have seen that stock cobalts has roughly 3 degrees of knock from the factory on low octane gas. Using a higher octane does help this. But with ANY car out there, the higher octane is better than the low grade stuff.

Sorry for being kind of a smart ass before. I forget sometimes that once, I was a new owner too.
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Old 03-30-2007, 09:09 PM
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Whatever dude.
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Old 03-30-2007, 09:09 PM
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You may all know this already but it says in the manual that Premium is required for the 2.4L also.
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Old 03-30-2007, 09:14 PM
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Originally Posted by BallsoutBalt
Here's the thing, you CAN use anything you want. However; I have seen that stock cobalts has roughly 3 degrees of knock from the factory on low octane gas. Using a higher octane does help this. But with ANY car out there, the higher octane is better than the low grade stuff.

Sorry for being kind of a smart ass before. I forget sometimes that once, I was a new owner too.


no prob

On my 1999 S-10 Xtreme (4.3L) they claimed to ONLY use 87 octane

thats the only reseson I asked
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Old 03-30-2007, 09:14 PM
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Originally Posted by JohnnySasakiMGS
Keep that ignorant attitude about not reading an owners manual and you'll find out soon enough that you WILL be destroying a brand new car.

SS Supercharged cars REQUIRE 91 octane to run correctly. Good luck and keep her in one piece. And PLEASE read the owners manual.
Easy man. Most people out ther DON'T read the manual. I don't think its ignorance, just lack of patience and time. Who isn't guilty of that?
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Old 03-30-2007, 09:14 PM
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Originally Posted by Chevytuffda
You may all know this already but it says in the manual that Premium is required for the 2.4L also.
Yeah really... IN THE MANUAL. NO NEED TO ASK!

ITS IN THE MANUAL
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Old 03-30-2007, 09:15 PM
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Originally Posted by JohnnySasakiMGS
Yeah really... IN THE MANUAL. NO NEED TO ASK!

ITS IN THE MANUAL
^X2
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Old 03-30-2007, 09:17 PM
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Originally Posted by BallsoutBalt
Easy man. Most people out ther DON'T read the manual. I don't think its ignorance, just lack of patience and time. Who isn't guilty of that?
Yeah you're right. I just think that in the CSS.net homepage it should be clearly marked

Base, LS, LT 87 Octane
SS 2.4 and SS/SC 91+
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Old 03-30-2007, 10:53 PM
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Dont be a cheap ass! use premium
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Old 03-30-2007, 11:05 PM
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Originally Posted by sensesfail99
Dont be a cheap ass! use premium
X 1,404,450
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Old 03-31-2007, 04:45 PM
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So if it says to use 91 .....then 93 Super + is great for it then.
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Old 03-31-2007, 04:47 PM
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Originally Posted by 1BadBlueSS
So if it says to use 91 .....then 93 Super + is great for it then.
I suppose so. You probably wouldnt notice much. Around me you hardly ever see 91 octane. 87 89 and 93.
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Old 03-31-2007, 04:52 PM
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wow some tudes in this thread.. i use 93 oct. in my ride..

i like it cause even with the high gas prices.. here in wyo we still have the cheapest gas in the country.. 2.24 for premium
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