Best car for converting to run on vegetable oil as well as diesel?

Im in UK so american cars not so easy to get hold of except ford.Best car for converting to run on vegetable oil as well as diesel?
I've found that older Mercedes Benz cars have the most room for conversion. Find a car that doesn't have a computerized fuel system. You need space in the boot to install the aux. fuel tank. You also need space under the bonnet. There are many modifications needed for a successful conversion. Do your homework before committing. It is not cheap to do a proper conversion. You will need equipment and space at home to process the vegetable oil. Processing your own fuel saves you the most money. Find someone near your area who has converted diesels to advise you and help you with the project. Perhaps a local car club.Best car for converting to run on vegetable oil as well as diesel?
Definitely have to stick with late models that run on deisel.
any older car that runs on diesel but you dont just fill up with veg oil you run roughly half and half. remember though you risk ruining the engine.
any diesel for about 拢30 if your in the know
VW or Benz