Maybe you’ll have to add a heater run on oil to heat the bio-fuel to where it’ll flow okay.
In Bend, Oregon, they had to add ducting to direct exhaust heat to the fuel system on all their new ‘bio’ school buses last winter.
One morning, every bus in their fleet got stalled on the road after they left the warmth of the barn. It took two days to tow them all back to the barn, and a whole bunch of taxis to bring the students home. School was canceled for the week.