bigred,
there are a number of naysayers, and you will here tons of negative feedback
but there are many of us that do this... I run 100% veggie oil 100% of the time....and my oil is all waiste oil... so dont let the naysaysers convince you otherwise. In addition the diesel engine was invented to run off of veg oil... mine runs quiter, and has more power, It no longer smokes and it does not clank and sound like a diesel but more like a fine machine on veggie oil...

And people walk around to the back of my car and scoop up hands full of exhaust and breath it in...