# Tips on saving at the gas pump.

**URL:** <https://forums.speedlife.net/t/tips-on-saving-at-the-gas-pump/38813>\
**Category:** NYSpeed Automotive\
**Created:** [November 15, 2007, 12:17pm UTC](https://forums.speedlife.net/t/tips-on-saving-at-the-gas-pump/38813 "2007-11-15T12:17:41Z")\
**Posts on this page:** 1\
**Showing post:** 8

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**Author:** ![Fry](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/fry/32/7284_2.png) [@Fry](https://forums.speedlife.net/u/Fry)\
**Post date:** [November 15, 2007, 12:51pm UTC](https://forums.speedlife.net/t/tips-on-saving-at-the-gas-pump/38813/8 "2007-11-15T12:51:15Z")

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The problem with the temperature theory is that liquids don’t tend to have much of a thermal expansion coefficient. A quick google search turned up 950x10^-6 cubic ANGSTROMS per degree C. AKA nothing.

As for pumping more slowly… Again liquids aren’t compressible so having the nozzle half open will result with a higher volume but at the same velocity so I don’t really see a lot extra being vaporized. Maybe from turbulence in the tank lowering surface tension, but still.

Just theorizing.

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