Check out www.plantdrive.com I think frybrid is over kill and over priced. You can get a 13 gal marine fuel tank for about $60 depending on where you live probably won`t need a heated tank. All you need is a toggle switch to switch to your vegi tank when your motor heats up no need for a circuit board.

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81 240D 116,000 mi. motor, car 283,000 81 300D 155,000 81 300 unknown 81 300SD 221,000