In this study, researchers analyzed whether it was feasible for Cornell vehicles to use the Vector System (VS) by Optimus Technologies, a system that modifies diesel engine vehicles to run on biodiesel in addition to diesel in cold weather conditions. Biodiesel solidifies at a higher temperature than diesel, so to use biodiesel in the winter, the VS allows a vehicle to start using diesel while transferring the engine’s waste heat to thaw the biodiesel until it can be pumped and used. They also validated the VS and analyzed its limitations for winter operations. They also applied the results of the tractor case study to Cornell’s Facility and Campus Services Ground fleet, and the Tompkins Consolidated Area Transit (TCAT) fleet, and showed that they can expect to experience an estimated 53% and 74% reduction in CO2 emissions, respectively. The TCAT fleet achieves a 20.3% ROI from installing the VS, while the Grounds felt experiences minimal economic benefit and an ROI of 0.37%.