They all will, but there is the matter of the correct type of hoses and it must be refined. The older ones will run on any oil so long as you can get it to flow.
On a similar note guess what I saw at haaber freight the other day right next to the rubber o-ring kits? Yup, viton seals/o-rings! True, bio will eat your old rubber seals, so I'm guessing they just anticipated a possible change in fuel markets and just switched to viton stuff at the factory now
