When I bought my 07 SS/SC I was told by the dealer to use 91+ Gas, thats a given when your supercharged, But what about octane? Can I add it to 91+? and does it really do anything for me performance wise. If so what a good kind to use?

-D

 

more octane is always better..then u dont have to deal with the knock that 91 gives us

 

Stick to 93... Save you the headaches. I knock with 91 once in a while.

 

i know tthe ss/na takes 91...how about 93 octane is da to high

 

holy huge sig batman

 

if you have the 2.0 use 93...if you have the 2.4 use 91.


https://www.cobaltss.net/forums/war-stories-54/world-yours-cobalt-ss-sc-vs-friends-67806/


read about from the 24th post down about octane and you will see why you ss/sc should use 93 and not really use 87

 

yea....i try to cut it down but...dunno..thanks for the hoe to..now im going crazy lol

 

If you're asking about octane booster, I'd say no.

Good reading here, towards the bottom of the page:

http://www.idavette.net/hib/fuel/index.htm

 

in some places 93 is unavailable, i've been to towns where premium in 90 octane. there is a gas city by my house that sells 110 octane race fuel @ $5.46 a gallon

 

I always put 93 in my ss/sc its never had a tank of less

 

When I bought my SS S/C the salesman told me never to put premium in my car cuz it would destroy my engine and it would not be covered by warranty. My father who use to be a GM mechanic and I laughed the whole way home.

 

There's nowhere close to me that sells 93, it's all 91. I've had it for 4 months, no knock for me

 

hmm well 91 is the gihest here in southern colorado, I just found out however that apparently the dealerhsip would only put in 86/87 when people were test driving my baby : ( I got it with 600 Mi. on it is this bad or no?? I'll I run now is 91 so I hope theres no problems.

-D

 

at least stay away from regular (87). lol

 

and how are you monitoring it?