Blending is risky.
There are some here that swear by it but their observations do not jive with the scientific facts. Blends will seperate over time and you could end up burning unheated VO. That is a recipe for disaster.

You would be risking a $10000 engine to save the approx $3000 cost of converting the truck to burn VO.

If you do not have the cash to do a VO conversion build an appleseed processor and learn to make Bio.

Much safer that way.