I’ve been using biodiesel for over a year in my truck
and my car. I get the same gas mileage and performance. I’m using 100%
not a blend (although I do have to fill up with diesel when I go on trips).
There is no trouble switching back and forth. The only issue I’ve had is
that when you first switch your vehicle over, if you’re using 100% BD,
you’ll want to change the oil filter after the first tank of BD. It
really cleans out the tank and can clog things up. You can avoid this by using
a blend for a while and then switching gradually (just like changing feed for
your horse!!)