Hey well im ready to convert my 1984 300D to run on WVO, im in oklahoma and will be moving to colorado next year so i need it to be optimized for cold weather. I have FROM THE FRYER TO THE FUEL TANK, what is the best way to make the hose within a hose, the book says to use polyethylene hose for the fuel hose. Noticed that several people used copper and some more used aluminum lines, What is everyones thoughts on what to use?