Years ago when canola was still called rape, a contractor told me that his previous very expensive header burnt to the ground when he was stripping a crop of rape/canola..
His explanation was that there were fine hairs on the seed that built up somewhere in the header and because they contained oil, they stuck there. He said he emptied the header's fire extinguisher and then emptied the fire extinguisher from his truck but he said all they did was fan the flames. Then all he could do was stand back and watch his quite new header burn to the ground. He blamed the oil content of the fluff that had accumulated.
I believe he stuck to harvesting wheat after that.

