I have been making/running 100% biodiesel for >2 1/2 years with zero problems. I added a 2 micron filter after the 7 micron factory filter using vitron hoses. Got to love the <$0. 75/gal. it cost me.
Cant run it during the winter but runs just fine all spring thru fall.
I definitely do not run B100. I usually don't go over B30 and plug my truck in wherever I go, if at all possible. Even a gallon or two would be better than nothing. I try to run some bio in every tank year round rather than all bio in some tanks and none in others.
I am highly jealous of all of that beautiful snow.