B5 is a great start! We need to boost production of U.S.A. grown fuels before more implementation of biodiesel mixes can be achieved. B5 will help a lot and B20 is what were using here in Phoenix, Arizona to clean up our skies and it's working! I burn B100 myself in all my vehicles except for the Cadillac which still has to use dino-fuel. As a trucker, I can tell you that everyone I talk to loves the stuff. It makes engines last longer and replaces the lost lubricity of sulphur in ULSD. Biodiesel is a great upper cylinder lubricant like lead used to be in the 60's but without the harmful environmental side effects! Oh, the Power Wagon is a gasser too