I'm still under warranty...and I'm using biodiesel.
I've heard spotty reports about whether this is or is not a problem. Some folks warn against using or letting the dealer find out that you are using biodiesel...others tell of no problems, warranties being honored...even laws that prevent warranty cancelation unless the manufacturer can prove that the problem was caused by the fuel.
In any event, my license plate says "SOYFUEL" and I got the car to actively promote the use of the fuel...so, I really don't have a choice. I'm definitely "out there" publicly using biodiesel. If it ever would turn into a warranty problem...I'll just have to deal with it.
BTW...it won't be long now until it has been a year that I've been on biodiesel. The car runs great on BD, in fact, now that it is winter, I'm having to run a 20% blend ("B20") so the fuel will flow properly in the cold.
Wow! What a difference. I long for the return of the warmer temperatures so I can get back onto 100% biodiesel. It is so much cleaner and the car runs smoother and quieter on B100.
Actually, since I run now with petroluem for a small percentage of the year, I've calculated that my use of petroleum fuel has been cut by over 75% (so, I'm more than "carrying my weight" for getting the U.S. off of imported oil...U.S. imports a little more than 50%).
And...if I calculate my annual miles per gallon of petroleum based fuel, I'm getting about 190 mpg (in terms of petroleum usage)!
Now Darell...let me bask in the glory of that for just a moment before you remind me that your cool SUV uses NO petroleum so it gets like "infinite miles per gallon". /ubbthreads/images/graemlins/smile.gif