I have read in other discussion threads that heating oil and diesel fuel are the same. Only difference is the dye added for tax evasion. Oil companies just don't want everyone to know this. The person who stated this works for an oil company and is a chemist with a PHD to back it up. I also know of several folk who have used heating fuel for years. One has done 300k+ miles. He owns a farm and runs everything on heating oil.
don't know if true just passing this along.
Just my .02