Ad says the car has a veggie oil system. Yeah, it'll burn diesel just fine. I'd turn off the heater to the diesel tank and lines and such.

(Rest of this post is opinion, YMMV, this is not legal advice, please consult with your personal physician before engaging in _______ activity, worth what you paid for it, etc.)

Veggie oil systems are kinda like a tattoo or facial piercings on a pretty girl - not an upgrade under any circumstances. A perfect implementation of either being "not a huge downgrade" and very easily going to "what a flaming disaster, wtf did you do to your car(body)?"

That said, in Texas, someone may get away with an imperfect implementation of a veggie oil system without immediate disaster, and at the miles on that car you should expect to be doing injectors and most of the other stuff that would be fubar'd by a bad veggie oil system anyway.

I would definitely pay less for a car with a veggie oil system than one without one. Again, it is not an upgrade.

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617 swapped Toyota Pickup, 22-24 MPG, 50k miles on swap