Yes, for warante purposes,but they will and do run on 100% bio (B100) with out any problems as long as it's well made bio.JohnD wrote:Hasn't Citroen/Peugeot said that only up to 30% biodiesel should be used in HDIs.Dommo wrote:
I'm unsure if biodiesel works in direct injection diesels .
you shouldn't try to run an HDI on bio that hasn't passed the tests for convertion and soaps.