The British supermarket chain Morrison's sells B30 - petroleum diesel with 30 percent biodiesel blended into it - at 113 pump stations in their supermarkets in the United Kingdom. However, switching to B30 might not be advisable for some motorists, and there are still worries that the biofuel could void the car's warranty. Currently, only PSA engines, sold under the Citroën and Peugeot marques, explicitly allow drivers to fill up with B30 without voiding the warranty. 15 other brands - Audi-VW, Fiat, Ford, Honda, Hyundai-Kia, Jaguar, Mercedes, Nissan-Renault, Toyota, Vauxhall and Volvo - have stated that B30 isn't advisable for their models since it has a much higher blend of FAME (Fatty Acid Methyl Ester) than regular diesel. Nevertheless, some PSA diesel engines are found in Fords, Volvos and MINIs as well. Harvest Energy, the supplier of Morrison's biodiesel stated that their fuel was completely safe for engines and manufactured to quality standards EN590 and EN 14214, the European biofuel standard.

[Source: Cleangreencars]

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