One of the Roger Williams University shuttle buses runs almost completely on recycled canola oil from the Dining Commons. Here are some of the facts:
1997 Ford F-350 Van
How It Works
Fried foods from The Commons are deep-fried in 100% canola oil. A few times per week, the used oil is recycled. It is taken from the Commons and is filtered and transported to the Facilities Building at North Campus where it goes through another filtering process and is put into the van’s canola oil tank. This tank has a pre-heater which heats the oil to allow it to flow better.
The vehicle is started at the beginning of the day with diesel fuel. When the temperature of the engine/radiator fluid reaches 161 degrees F (in about 10 minutes), an on-board computer automatically switches from the diesel tank to the canola tank. The vehicle runs all day long on the recycled canola oil. At the end of the day ,when the driver turns the key to the “off” position, the computer switches the fuel source back to the diesel tank and the engine continues to run for about three minutes. The diesel fuel purges all of the canola oil out of the engine and fuel lines to prevent clogging of the system when the canola oil cools and thickens.