Other than the dye which differentiates the road tax charge, there is no difference except the marketing which implies additives included which, if done at all, are made at the refinery, not the distribution point.Other then maybe tax is there any difference in buying your diesel fuel from a car gas station or marine fuel dock?
As I understand it, Jet A is kerosene w/additives to prevent congealing at altitude (low OAT). I would be concerned about a lack of lubrication of the injection pump and other parts.I use Jet-A from a local small airport. (A lot of local airports have self-service so it is easy to get) It is more stable and will last a lot longer. I have no idea what the difference in blend is between dock and service station diesel. I do know that in my truck bio diesel blend, which most stations have now, gets less mileage.