Glycerin & Carbonizing issue for vegetable oil based fuel?
Glycerin is no more an issue to vegetable based fuel than paraffin is to petroleum based diesel. Both are easily burned up in the high compression explosion of a diesel engine, assuming the fuel is thinned well enough to properly spray out of the injectors. The temperature inside the combustion chamber is between 1300-1600 F and glycerin is consumed at 380 F. As long as it sprays properly as our fuel does, no residual will be left unburned and, therefore, no potential for carbon buildup.
