I've just started running a mixture of WVO Kerosene and gasoline in my 85 Suburban and have had no problems so far with a mix as high as 65% WVA.
I'm using a heat exchanger just after the stock mechanical lift pump and a PH8-A oil filter after that and before the stock filter. No second tank yet but I keep the block heater plugged in when the truck is not in use and have attached a 10 ohm resitor to the stock rectangular fuel filter. The resistor is powered by the trucks batteries. This system has been working fine so far in moderate weather but I intend to install a second tank this week.