The seven weirdest fuels

[Trajan]

http://green.yahoo.com/blog/daily_green_driving/35/the-seven-weirdest-car-fuels.html

 

[Samilcar]

Interesting. I'd always wondered about the oily sheen that would appear when the brewed coffee got too old at work. I always suspected the coffee maker was somehow contaminating the brew. Never even suspected that coffee beans were 10% oil.