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Originally Posted by Jedgar

airfooter: you say petro and VO don't stay in solution very well. What is commercially available "B20" blend anyway but petro blended with 20% VO ? You also say
VO and copper don't play well together, but I see you used quite a bit of copper tubing in the piping on the conversion on your truck.

I really like what I've read about the Vegistroke conversion, but on his website he seems to recommend blending WVO with petro to avoid polymerization.

I appreciate all the advice you guys are offering but I get a little confused with all the different approaches people are using.

Thanks again for all your help and I definitely don't want to do something stupid that's going to cause problems with my truck.

No, B20 is not VO and diesel, it is BIODIESEL and diesel - big difference. And FWIW, my crude experiments w/blending indicate VO and bio-d stay in solution much better than diesel and VO. I have a friend who has good success blending B20 and VO, but I'm not sure of th ratios.

I have (2) 12" peices of 1/4" copper between my manifold block and the factory fuel lines. VO is in contact w/this for a MOMENT immeadiately before it is burned, this is why it has not been a problem. I have had the steel line to replace it with sitting on the workbench since about a week after I did the conversion! The other copper you saw was probably the wrap around VO filter, it has coolant running thru it.

Report on Oxidation and Polymerization of Vegetable Oil - Forums I wish I had a direct link to Mr. Beatty's report. This guy has degrees in chemistry and physics and has been in the VO business for 25yrs. He has a lab dedicated to VO at his disposal. VO as a fuel is now a hobby for him, but being a scientist, he had to answer the polymerization question scientifically. Please disregard the useless reteric of the 'jester' and some of the other non-productive posts in this thread.

What FN74/Vegistroke found in his testing was that some petro-diesel added to VO helped prevent polymerization. Last I saw, he was trying to determine how little diesel it took to mitigate the reaction.

I agree there is alot of confusing information available. It seems that the ones who claim to know the most, often are the least informed. When confronted, they are naturally inclined to defend their ideas, even in light of new information. It doesn't help that folks see this as a cash cow and are cashing in on the fact there is not good information readily available yet. "They" are allegedly selling hundreds of VO conversion kits/mth - with COPPER heat exchangers heating whole fuel tanks!! We know for a FACT this causes rapid polymerization, but how can hundreds of kits/mth be wrong?

KEEP RESEARCHING, find actual people with a bunch of VO miles to talk to. The best sources will be folks that have done several conversions or modified their systems as they learned what works and doesn't. The truth is, there is still alot to learn and anyone who claims to have it all figured out is misguided.