Originally Posted by Jimmy Joe

I know it ruffles peoples feathers sometimes to mention commercial stuff regarding veg oil (!), but you asked; and the Vegtherm warrants a serious look. No affiliation, other than I use it and it works great. One of the few products specifically made for veg. Neoteric Biofuels designed and sells it, nice folks. It does draw on the MBZ alternator, an upgrade to that Saab unit is eventually in order for my setup.