Has any one had any experience with unrefined soya oil? Or any unrefined oil for that matter?

Do a search for oil press. There was a discussion about this, the oil must be "de-gummed."

You can start by reading this thread, FuelFarmer grows his own oil and makes bio with NO degumming required.
http://biodiesel.infopop.cc/eve/forums/a/tpc/f/41960555...291065742#3291065742

Sorry, as this is an SVO forum, I was not referring to bioD...

We have used crude soybean and canola oil. When we first got into burning farm pressed oil we ran a blend of oil and diesel. It is my opinion that pressed oil does not have a lot of "gum". We ran the oil through a centrifuge and used it in our tractors.
We now make biodiesel with crude oil. All I can say is it seems to work.

Thanks for the replies. I am looking at buying some unrefined soya oil. The price is good as the oil is actually a by-product for this company.