PSA Peugeot Citroen has decided to give full warranty protection on all its HDi common rail power units that are operated on a blend of up to 30% FAME (fatty acid methyl ester) and 70% diesel. Most manufacturers only recommend a 5% blend. As part of its strategy on alternative energies to cut carbon dioxide emissions, the French group is recommending a blend of up to 5%FAME as being suitable for all existing diesel engines and says up to 5% ethanol or up to 12% ethanol by-product is suitable for petrol engines.
But PSA has given the green light to fleets which operate the group's HDi motors and have control of their own fuel supplies to use a blend of up to 30% FAME.
The move emerged as company executives staged a conference on technology and the environment in London.
Gilles Michel, platforms and engineering vice-president, said: 'We see bio-fuels as an elegant solution in the battle to reduce CO2 emissions. They are completely natural and effective immediately. Bio-fuels represent a perfect solution by having a direct impact on emissions for relatively small expenditure. They provide a 20% reduction in CO2 at source and we are keen to encourage their use.'