Main problem folks run into running WVO is that there is no way to filter out dissolved sugar, salt, MSG, etc in the oil. Eventually this cokes up your injectors, valves and piston top.
This is the reason many people who have touted WVO have switched to BD, the dissolved impurities are removed.
Give it 25k for problems to start showing up.
There was a guy at DTR raving about how he had been running heated WVO for 20k. He PMed me about month ago with engine rebuild questions, haven't seen him post about WVO since then.
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Bill
'95 2500 4wd auto
'95 3500 5 speed heavy hauler
Both far from stock