The reason why you need to be careful with B100 in newer diesel engines is because they are what is known as "high pressure rail" systems. The pressures in these systems are really quite phenominal. My truck has pressures in excess of 23,000 psi - VW's are now up around 28,000 and the new Dodges are in at over 30,000 psi I understand. There are some great benefits to these high pressures, but if you're using biodiesel that isn't washed, dried and brewed by an experienced homebrewer, the fuel can polymerize at those high pressures and become almost plastic-like. The manufacturers try their best to keep folks from using B100 beause the one thing that they can't control, is the type of diesel fuel people use. We can't blame them for that. Don't kid yourself about the quality of commercial diesel/biodiesel either. Some of the absolute worst biodiesel comes from commercial producers. Most commercial producers simply cannot devote the TLC to wash each batch 5-6 times to remove all excess lye and methanol and then drying to make sure all the water has been eliminated. Time = money. The best biodiesel is made by homebrewers, hands down. Just like the best beer comes from our nations microbrewerys.
Making fuel is a wonderful thing, just don't pour your first attempts in your new expensive car or truck. For the first 6 months or so, the batches that I didn't ruin and need to dispose of, were burned in my old indirect injection John Deere, that would run on almost anything. Eight years,over 40,000 gallons and 160,000 miles on B100 later, it's a lot of time and energy - but it sure feels good recycling. By the way, our wonderful listeroids are of the low pressure, indirect injected type diesel engines that will burn anything, so all the small batches that you make - even if they are not perfect, will run fine. Just filter and go.
Houndog
