Quote:
Originally Posted by cRiPpLe_rOoStEr
Is the '99 U.S.-spec F-250 fitted with a plastic fuel tank or a sheetmetal one? I only remember the Brazilian F-350 being fitted with a sheetmetal tank. Anyway, with a metallic fuel tank it would be possible to get an electric fuel heater, and with a good filter it would be possible to use vegetable oils without a second tank for start-ups on regular Diesel fuel, or even to use summer fuel leftovers in colder weather.
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Summit Racing carries a 24.5 steel tank that's supposed to replace the OEM; even if the OEM is plastic, you could do a little switcheroo, make an auxiliary plastic tank the petro diesel option and let the new steel tank in the original location become the WVO tank. It's just a matter of plumbing, and while some elements of automotive technology leave me scratching my head, plumbing is not one of them.
All of that depends on EcoSD's current direction, of course. Me, I'd focus on aero and for me that would mean starting with fender skirts. The rear wheel wells on those things are both gigantic and, ironically, don't generally have much wheel in them. The wheel is largely below the level of the wheel well. The 4x4s in particular suffer from this.