Fuel prices at the pump have hit record highs in France, with diesel now costing over 2.41 euros per liter and SP95-E10, a common gasoline type, reaching more than 2.18 euros per liter. These steep prices have prompted some drivers to look for cheaper alternatives, such as rapeseed oil, which is available for about 1.45 euros per liter. One driver interviewed by France 3 Bourgogne claimed to save 70 cents per liter using this method and said his car performed well with no noticeable issues. However, mechanics caution that using rapeseed oil can cause serious problems with a vehicle’s engine. The oil can clog fuel injectors and damage the fuel pump, leading to expensive repairs. One mechanic warned that replacing damaged injectors could cost up to 800 euros. According to the Regional Customs Directorate of Dijon, the use of rapeseed oil as a fuel source is not permitted under the Customs Code. While it is not a criminal offense, customs officials can fine drivers 135 euros and even seize their vehicles. Only certain professionals, such as those in agriculture and transport, are legally allowed to use vegetable oil in their vehicles. Another alternative being considered is mixing gasoline with ethanol, a less expensive option. However, this practice comes with its own risks. Ethanol burns hotter than regular gasoline, which can lead to increased fuel consumption and wear on engine components like injectors. A mechanic in Essonne noted that using ethanol can increase fuel use by up to 30%. Additionally, failing to inform insurance providers about the use of ethanol could result in denied claims in the event of an accident. To help reduce the financial burden of high fuel prices, experts suggest comparing prices at different gas stations and taking advantage of government assistance programs, such as the 100 euro bonus for heavy fuel users. For those willing to invest in long-term solutions, converting vehicles to run on bioethanol or liquefied petroleum gas (LPG) could be viable options. However, these conversions require specialized equipment and can cost between 500 and 1,000 euros to install.