No real reason you could not. Diesels are really toleran, Rudolph diesel’s original design ran on peanut oil. People here run straight waste veggies oil (after filtering) and pre-heating it, in all types of diesle engines. Starting on straight diesel and switching over to waste. Just need a separate tank and fuel pump (assuming the fp is in the tank) along with a way to heat the tank. I’ve seen Mahindra tractors run this way. Bio is easier Since it goes straight into the tank. Also remember as an off-road vehicle you can use farm diesel and avoid the road taxes, we have a 300 gallon tank here that the local heating oil guy fills. I know he will fill 55gal drums if you bring them over to him. Check around and ask farmers where they get their fuel, same stuff as highway, just a hell of alot cheaper