What are some of the drawbacks of using biodiesel?

What are some of the drawbacks of using biodiesel?

Dan Sharp (Green Family Expert) gives expert video advice on: How does the use of biodiesel help to reduce greenhouse gas emissions?; What are some of the benefits of using biodiesel? and more...

There are two main drawbacks to using biodiesel. One is that many of the newer car warranties don't allow for the use of biodiesel. Another is that if you decide that you are going to make your own biodiesel it can be relatively time-consuming and it can potentially be a little bit messy.