I'm with PizzaChef on this one. Although I'm a big fan of bio and the two tank WVO system, I would be very hesitant to buy a car from anyone else who ran WVO. I know that I take every precaution to do it right, plus I'm saving $ by doing so. But unless I absolutely knew that the PO did it right, I'd be wary.

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John Schroader
bio burnin' 83 300D, '83 300 SD, '79 240D
"I've never met a man who was good at making excuses who was good at anything else" Ben Franklin
"You cannot permanently help a man by doing for him what he could and should do for himself" Abraham Lincoln