Oh, if you spill it on pin striping for example, it will dissolve the adhesive. It did on mine. It also damaged the paint a bit. Now if you have steel fuel lines it will strip them clean of gunk, which usually causes the fuel filter to clog a time or three depending on how many miles have been driven.
There also have been complaints of deposits building up on injector tips with Biodiesel
To clarify my comments re corrosion, I'm talking about running full strength 100% Biodiesel
, or B100. The government I think mandates a 5% blend with regular diesel or B5. Some places sell B20.
will jell at higher temps than regular diesel but that can be fixed with additives, even as high as 45-50F I believe, depending on the oil type it was made from.