On most new high pressure diesels its a bad idea to run bio diesel at all. its very difficult to prove the blend of bio you have used and the quality seams to differ greatly. from my experiance with Hdi engines you can be left with a bill of £1000-2000.
O and its about this time of year when cars start geting towed in because they wont start due to the fuel turning to a semi solid in the tank!
