Found a really interesting fragment of data from a Peugeot site - load up
<a href="http://www.vectorbd.com/peugeot/files/fuelign.xls" target="_blank">www.vectorbd.com/peugeot/files/fuelign.xls</a>
and check the Porsche column - a few common items that may help people to find substitutes in a hurry.
jp