# 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\
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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 13, 2009, 7:15am UTC](https://forums.speedlife.net/t/cool-thing-i-found-out-about-sunoco-and-shell-gas/127163/8 "2009-08-13T07:15:07Z")

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> [@FS/Feeler: 89 e30 325ix](https://forums.speedlife.net/t/fs-feeler-89-e30-325ix/23494/25):
>
> ^^ If you are tuned for 94 and run 91 gas, of course your car will run like shit! Come on Markie!
> 
> Sunoco has ethanol and Shell has none. Big difference right there.
> 
> As for the cruise control unlocking more power, it wouldn’t really matter as I tried both cruise control features on both tanks of gas and got TOTALLY different results.
> 
> But cool fact 87s15lt1.

Nah this was on a Stock ECU when I did it. Never put in 91 when I was tuned for 94 of course! Come on!

Anyways, I’ve been doing some Googling and it does seem like Shell V-power has no complains at all.  
I’m sure if it was “94”, everyone would be using it. I guess people just think that higher octane is better in general. But if you aren’t tuned for 94, there’s no point in putting in 94.

Seems like a lot bikers have issues when they use Sunoco 94.

Apparently Shell 91 will give you better mileage too due to it having no ethanol which burns faster.

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