# Focus on the past

**URL:** <https://community.cartalk.com/t/focus-on-the-past/73368>\
**Category:** General Discussion\
**Created:** [July 4, 2012, 6:36am UTC](https://community.cartalk.com/t/focus-on-the-past/73368 "2012-07-04T06:36:59Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![shootie](https://avatars.discourse-cdn.com/v4/letter/s/53a042/32.png) [@shootie](https://community.cartalk.com/u/shootie)\
**Post date:** [July 4, 2012, 6:36am UTC](https://community.cartalk.com/t/focus-on-the-past/73368/1 "2012-07-04T06:36:59Z")

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wonder what if we had todays cars in the 70’s.what kind of mpg they would have got off that purer gas?

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**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\
**Post date:** [July 4, 2012, 6:42am UTC](https://community.cartalk.com/t/focus-on-the-past/73368/2 "2012-07-04T06:42:43Z")

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About 3-5% better.

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**Author:** ![mark9207](https://avatars.discourse-cdn.com/v4/letter/m/71c47a/32.png) [@mark9207](https://community.cartalk.com/u/mark9207)\
**Post date:** [July 4, 2012, 8:56am UTC](https://community.cartalk.com/t/focus-on-the-past/73368/3 "2012-07-04T08:56:55Z")

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That stuff is still around, and yes it does make an appreciable difference: [http://pure-gas.org/](http://pure-gas.org/)

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**Author:** ![bscar2](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/bscar2/32/2468_2.png) [@bscar2](https://community.cartalk.com/u/bscar2)\
**Post date:** [July 5, 2012, 3:00am UTC](https://community.cartalk.com/t/focus-on-the-past/73368/4 "2012-07-05T03:00:26Z")

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Purer gas?  
You mean the kind with lead in it?