Want to mess with your friends, click on link and scroll to the bottom of the page for the "Fuel Fragrances".
https://www.worldwideracingfuels.com/prod_add.htm
We are doing some dyno testing on race bikes using the Propylene Oxide (on same page). I will let you know what the results are. Have heard some really good things about it. If it works well can use pump gas and the propylene and get away from the 10.00+ per gal gas I run now.