you need to keep your wvo heated all the way from the tank to the secondary heat exchanger, do a hose-on-hose or hose-in-hose delivery from the tank to the with coolant running around the wvo on the way to the engine, a secondary heat exchanger under the hood, and, well, since you're in new jersey, you might want to install a veg-therm right before the ip to assure you have optimum wvo temp (arguably about 180f) when the oil hits the ip. two 3-port solenoids, one before the ip and one after the ip will control the switchover to wvo after warming on diesel and allow you purge the outgoing wvo from the return lines before shutting down on diesel. a temp gauge will allow you to monitor the point where the wvo is hot enough to switchover. just do a little research, and the aforementioned frybrid is the joint to do it.