what gas octane do you use? What is your MPG? - Cadillac V-Series - CTS-V, STS-V and XLR-V
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post #1 of 3 (permalink) Old 04-18-2008, 09:58 AM Thread Starter
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what gas octane do you use? What is your MPG?

I am curious what gas octane everyone is using and what type of MPG are you getting?

thanks
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post #2 of 3 (permalink) Old 04-20-2008, 01:21 PM
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Originally Posted by bagelluvr View Post
I am curious what gas octane everyone is using and what type of MPG are you getting?

thanks
I've always used either Shell or Chevron 91 Octane fuel with the following resultes:

06 CTS-V est 24 mpg highway, 21 city
06 Corvette est 28 mpg highway, 24 city
99 Corvette est 26 mpg highway, 20 city

The 99 has been modified though so the economy is worse.




2005 CTS-V - repurchased by GM as a lemon
2006 Corvette Coupe
1999 Corvette Fixed Roof Coupe
http://www.thend.org/~mkane/Corvette/

Install a wide band oxygen sensor in place of a stock sensor:
http://www.thend.org/~mkane/Corvette/wbo2.html

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Originally Posted by TSB1684809
Notice: Vehicle component durability is greatly influenced by these driver abuses. Driving in this manner is not recommended.
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post #3 of 3 (permalink) Old 04-24-2008, 09:12 AM Thread Starter
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Gas octane..

Thanks for the reply I am just curious if everyone does infact use the higher octane.
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