Could someone help me with knowledge for converting my 1993F350 to be able to run on veggie oil. I am being told that I should keep diesel in one of my tanks for starting and shutting down and I can have veggie oil in the other tank for normal operations. I was told about running a copper tube thru veggie oil tank to circulate hot water. Can someone help me with some info? Please email me at rsbryant1963@yahoo.com. Thank you. Randy B.