Big problem...popped the block heater

[smolkin]

It starts fine in that weather without being plugged in. It even started ok tonight when I finally got everything put back together. So I'm just very blessed and grateful that it didn't get hurt. I might decide to blend in some diesel or kerosene on this next tank full, B100 might not flow too well in the 20s, but it flowed well enough to start and run pretty normally tonight.

I'm a few clicks north of you but my B70+DieselKleen mix has been OK, and it was 20* yesterday morning (it's a balmy 29* atm). I make sure the truck is warmed up enough to at least open the thermostat before I drive just to be safe. This is also without my fuel heating stuff hooked up right now, and homemade bio that prob has a bit more glycerin floating in it than store-bought.
That's where a cyclonic w/s helps.