I emailed Kia and received this reply
"Dear Sir
Thank you for your e-mail regarding the use of Biodiesel fuel in your Kia fitted with a 2.9 CRDi engine. Your communication has been forwarded to the UK for response.
There is no technical reason why the vehicle should not run on biodiesel providing the fuel used meets the right standards and octane rating, however I must advise that Kia Motors have not carried out any long term testing and therefore do not warrant the use of biofuels. If a fault develops that is directly attributable to the type of fuel used then it would not be covered by the manufacturers warranty. Biodiesel is also a very good solvent and may have a longer term affect on rubber seals, etc. within the fuel system.
I have quoted below a section from a motoring website which highlights some of the areas to be aware of as a user of this fuel:
What should motorists be aware of if considering using Biodiesel?
* Motorists should ensure that the biodiesel they intend to use meets the standards set out by law and that their fuel supplier will guarantee that.
* Motorists need to be aware of biodiesel's freezing properties and may need to take precautions. In very cold conditions, biodiesel does gel faster than petroleum diesel.
* Biodiesel is a good solvent so it is recommended to wipe any biodiesel or biodiesel blend spills from painted surfaces immediately. Biodiesel also has the benefit of acting like a solvent to clean the engine. If the engine has been previously running on conventional diesel this can result in an initial need to change fuel filters until sludge left by petroleum fuel is purged.
* Biodiesel soaked rags should be stored in a safety can or dried individually to avoid the potential for spontaneous combustion.
I trust this information is of use.
Yours faithfully
Kevin Todd, Customer Services
Kia Motors (UK) Ltd"
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