Been running my work truck on a blend for years, lowers the viscosity rather well, stays mixed, and runs great even in the winter Portland/Salem Oregon.
For every 10 gallons Wvo, 1-1.3 gallons gas as a solvent and 10 gallons diesel to thin.
Runs fine through a number of vehicles, work and personal, PowerStroke, IDI, Mercedes, couple of the vehicles use solid state electric fuel pumps and have no issues with the blend. I've noticed a few of the vehicles run smoother on the blend than just regular diesel.
I'm practically between jobs at the moment so running blend in my truck is the only thing keeping me employed and just making it. Hope to have that good job by the end of summer to finally do the final few additions to run Heated SVO and the startup and shutdowns on Diesel.