How much impact biodiesel has on FE?
 

As subject - how much impact biodiesel has on FE assuming 100% biodiesel being put in the tank? One biodiesel website mentions a 11% drop in FE.

Thanks for help in advance!

There is a thread on biodiesel on the Polish Peugeot Club forum, and those who use the locally available bioester (esterified rapeseed oil, I believe) wrote that they haven't noticed any change in FE or power. I'm running with some in my tank (about 3% bio) and no difference (I'm assuming that my slightly worse FE is b/c my summer tires are wider :( ).