Biodiesel for Duramax

[PJD15X]

Has anyone used the biodiesel in a Duramax, and is it safe to use it? Are there any modifications needed? I would not want to louse up my engine, it is running too good now.
Any information would be appreciated.
Thanks

[Hillbilly Jim]

I have ran bio-diesel from soybeans for almost five years. I buy B-20 and put 5 to 10 gal. everyother fillup. Last two fill ups have been all B-80 as price locally is the same. No problems.
I recommend its use as it has many benifits and a friend here in Jefferson City is the head of the National Bio-Diesel orginazation.

Hillbilly Jim

[Paintdude]

I know guys running it in the older Fords, but no one with a Duramax..It is some greasy. slimy stuff..