so I've been trying to wrap my brain around the plumbing situations for a dual tank WVO system.
I was rapping with my brother yesterday (he's a mechanical engineer for a motion control company) and had this whole dual tank figured when he pointed out the obvious:
my daily commute is only 10 miles one way, which isn't necessarily conducive to running WVO. by the time the engine's warmed up and ready to switch tanks, I'm almost to my destination and ready to switch back for shutdown.
so my brother suggested looking into cooking up biodiesel as opposed to converting the fuel system for dual tanks.

I've been researching this and found that making biodiesel isn't difficult at all.
check here: http://journeytoforever.org/biodiesel_mike.html
there are a couple of different recipes and processes for making bio. Mike Pelly's seems like the logical staring point.

it just seems to me that if you're willing to go through all the hassle of installing a second tank with all the plumbing and heating systems and you're collecting, cleaning and filtering WVO anyway, why not just keep your trunk space and build a biodiesel processor instead?
the price of diesel round here is between $2.30 and $2.65 (yikes!) with B100 clocking in at an even $3.00.
so I'll be experimenting with processing my own bio in the coming weeks and I'll be sure to keep y'all posted on my progress (or lack thereof).

thanx again for everyone's help, this forum rocks

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'79 300D "Jaeger"
'61 VW Baja "Frosch"
'92 Honda Shadow 600
'80 Honda 185 (cafe project)