# Cool thing I found out about Sunoco and Shell Gas

**URL:** <https://forums.speedlife.net/t/cool-thing-i-found-out-about-sunoco-and-shell-gas/127163>\
**Category:** SON240sx Automotive\
**Created:** [August 13, 2009, 6:16am UTC](https://forums.speedlife.net/t/cool-thing-i-found-out-about-sunoco-and-shell-gas/127163 "2009-08-13T06:16:08Z")\
**Posts on this page:** 1\
**Showing post:** 67

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**Author:** ![Fobwall](https://avatars.discourse-cdn.com/v4/letter/f/7ea924/32.png) [@Fobwall](https://forums.speedlife.net/u/Fobwall)\
**Post date:** [August 20, 2009, 6:26am UTC](https://forums.speedlife.net/t/cool-thing-i-found-out-about-sunoco-and-shell-gas/127163/67 "2009-08-20T06:26:29Z")

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> [@Fs: cheap crap and free stuff](https://forums.speedlife.net/t/fs-cheap-crap-and-free-stuff/23615/5):
>
> wtf, did no one read the chart/link i posted on page one.  
> Gas has more energy then a gas + ethanol mix. No experiments needed. The only thing to decide is if the price is worth the millage saved (for those that don’t need octane rating as a deciding factor)
> 
> The octane rating is a measure of the resistance of gasoline and other fuels to detonation. If u need a higher octane to prevent detonation then this should be ur determining factor for a higher grade.
> 
> “Octane rating does not relate to the energy content of the fuel. It is only a measure of the fuel’s tendency to burn in a controlled manner, rather than exploding in an uncontrolled manner.”

Hey, correct me if I’m wrong but I’m going to try and sum up what you said.

It’s pretty much like getting brake fluid that’s good till 500 degrees. But if your brake fluid temps only get up to 190 degrees max, you won’t really see much benefit from running 500 degree fluid as 240 degrees should be good enough?

But some people might think that 500 degree fluid might make them stop faster.

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