That was 80% diesel and 20% WVO. Converted or not converted, for running on 100% WVO, our vehicles still start cold and require a low viscosity fuel like diesel or biodiesel. Not including WVO kits that provide almost instant 12v heat to the fuel
pre-injector or single tank veggie conversions. Twice we've forgotten to purge the lines in ours with diesel, shut down over night July/August on WVO, and our Delica started fine on 100% WVO. In those cases though it was smoky and rougher running till warmed up.
Yes we easily could run both our Delicas on a 50/50 mix for half the year but; we want to ensure the injectors are as clean as possible, may want to spend a night in the mountains on short notice (you never know), and of the two vans needing a fill since April, hers took a whooping $26 for diesel.
Of course also, virgin canola is a bit better of a fuel then processed WVO.