My F350 has 2 fuel tanks (toggle for fuel from either tank). Could I use the 2nd tank for WVO without 'conversion' if only used in the warm weather? Also, would WVO tank have to be heated when engine is 'warm' (and only used in warm weather)?

i recently converted my f-350 7.3, must have burned over 300
gallons of wvo, now i think the injection pump is fried. my pre-filter set up took a crap before a long trip right after i
converted, so in my haste, i dumped it into the 100 gallon
on board storage tank, hoping the 10 micron veggie filter
would take care of it, i guess it did, for a while. it started
to idle rough, so i changed out a return line orifice and replaced with a full flow, it worked out, for a while. then it
started to stall, until it had been running for a while, i blamed it on an air leak somewhere. then it would start and
immediately stall, crank, crank, crank it would start and stall and start and stall. then i went and forgot to purge
and now it won't start. replaced the mechanical lift pump, checked the glow plugs, relay etc. i get fuel up to the injection pump, then nothing. so, one would say either i fried it or it was it's time to go. any body got any ideas, or experience with the 7.3 conversion. by-the-by way, i did my

ANyone know a mechanic in South Florida specializing in converting a Diesel Engine to Bio Diesel?
Thank you,
Bambi
My number is 954-714-9334