Iain DAVEY    Department   Kyoto Junior College of Foreign Languages  , Department of English Studies for Careers    Position   Professor
Date	2025/11/14
Presentation Theme	Using Waste Vegetable Oil (WVO) as a Local Carbon Neutral Car Fuel: A Case Study
Conference	The 14th International Symposium on Environmentally Conscious Design and Inverse Manufacturing (EcoDesign2025)
Conference Type	International
Presentation Type	Speech (General)
Contribution Type	Individual
Country	Japan
Venue	Tokyo
Holding period	2025/11/12～2025/11/14
Details	This case study details the use of waste vegetable oil (WVO) as an alternative fuel in a conventional diesel vehicle in Japan. Over 18 years and 200,000 kilometres, the vehicle operated on filtered WVO sourced from local restaurants. Modifications enabled reliable year-round use, though winter performance and fuel quality initially create challenges. Data collected over a seven-year period showed comparable efficiency to diesel and highlighted key maintenance and environmental factors. While not easily scalable, WVO offers a low-cost, low-carbon solution for individuals seeking energy independence. The findings highlight the potential of grassroots, localized fuels as transitional tools in sustainable transportation.