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Detroit It's not very unusual for Boston rock band Piebald to visit seven Chinese restaurants in four hours.
It's not that the guys in the band have an obsession with egg rolls and sweet-and-sour chicken, but they make good use of the grease that comes from making the food by using it to fuel Thor Piebald's white, orange and yellow E-350 Ford bus.
Thor runs almost solely on vegetable oil, and Chinese or Asian restaurants are the best places to get it because they change their grease frequently, guitarist-vocalist Aaron Stuart said Thursday before the band's sold-out show at the Shelter in Detroit.
However, if the quality of the grease isn't good enough, it's on to the next place, which drummer Luke Garro said can be frustrating, especially when "grease-hunting" in the middle of the night.
"The closer (the grease) looks to vegetable oil that comes in a bottle, the better it is," guitarist-vocalist Travis Shettel said.
Ideal grease is a golden orange color "golden fuel," Garro said.
Bassist Andrew Bonner said the band has learned to judge the quality of the grease by the "level of crud" in it.
"If it looks like someone threw up in there, it's probably not good," Bonner said.
Stuart made it clear that veggie oil is not the same as biodiesel, because biodiesel is chemically treated.