Fuel Filter and Nozzle
Biodiesel post filtering is a must have.  Just ask your self: Would I make fuel from used cooking oil
that had old french fries in it and then pour it in my new truck or car without filtering it?  Hopefully
you have said no because this step will help filter any extras out that were missed before putting in
your vehicle.

The way I see it, post filtering for your biodiesel should not be an option.  So when looking for a
biodiesel processor to buy look for at least an attached 10 micron fuel filter.  Finding one with a
water separator with a little valve on the bottom of it will be sufficient.  

Making biodiesel and getting it where you need it can get a little messy sometimes.  Finding a
processor that comes with a fuel nozzle will greatly reduce your mess and give you control over the
flow of biodiesel.  I can't tell you how many times I have spilled biodiesel trying to filter it out with just
a piece of hose.  Good thing biodiesel is nontoxic and biodegradable.