Originally Posted by CheaperJeeper
I have a couple of questions about this. I understand one of the biggest issues with WVO is gelling. What causes it to gel? How much (if any) of the gelling problem is due to water in the oil? Will anti-gel additives for diesel fuel help - or prevent - the problem?
I know that heating the veg-oil and starting/shutting down the engine on diesel are common solutions to the viscosity issues, but I'm trying to learn more. I was wondering about how much benefit there would be to "cooking" the water out of the oil - maybe using vacuum to lower the boiling point so that the water would boil out at a lower temp....
No water is not the issue. Hydrogenated oils are one of the problems. At normal temperatures they are solid. If your source of WVO is using partial Hydrogenated oil you will have some solid oil in you WVO. Heat is the only why to melt the solid oil.