To be reliable and have little trouble with your engine, make sure it runs perfect on diesel first. Use a 2 tank system (frybrid style), use clean dry oil and it will perfrorm flawlessly with out trouble. Also to save money on filters and provide more heat to wvo, plumb system in a controlled loop 3 valve system. I had my head off after 60,000 on oil for blown head gasket, and I couldn't tell it ran wvo. The head gasket failure was unrelated to wvo. See my sig for wvo conversion.

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2005 e320 cdi (132,000)
2005 Jeep CRD diesel--2.8L (138,000 miles) wrecked, insurance took
1993 Mercedes benz 300D 2.5 Turbo Frybrid powered. (336,000 miles) wrecked and sold as parts car
1990 Mercedes benz 300D 2.5 Turbo (170,000 miles) wrecked and sold as parts car

Check out my Frybrid Vegtable Oil Conversion at http://1990300dfrybridconversion.shutterfly.com/