Has anyone tried this? I've read it will not void my warranty and could possibly be better for my engine????

I run a B-20mix. no adverse effects and a little better mileage(not much).

I think that biodiesel could be the answer to many of the problems that common rail diesels are now experiencing. It is a superior fuel for superior diesel injection systems.

Check it out: http://www.biodiesel.org/resources/fuelfactsheets/default.shtm

Lubricity info: http://www.biodiesel.org/pdf_files/Lubricity.PDF

I've run it and did not notice any added power and did not get any better milage the only hope is it will lube the injectors and pump better but I don't think it is worth the extra cost.