# 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:** 69

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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, 6:59am UTC](https://forums.speedlife.net/t/cool-thing-i-found-out-about-sunoco-and-shell-gas/127163/69 "2009-08-20T06:59:20Z")

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> [@Performance Car Builder in Rochester](https://forums.speedlife.net/t/performance-car-builder-in-rochester/23624/4):
>
> Yeah, that’s basically it.
> 
> If your car does not require higher octane for knock resistance, than you’re making your car slower and less inefficient. Higher octane equals higher energy needed to burn it. If your car is not getting any detonation with 87, than anything above 87 is a waste of money and slows you down.

LOL

Funny thing about all this is that I always hear a lot of ricers say that “Yeah I only fill up with 91/94 octane and all they have is a stock NA engine”

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