Hello, gentlemen! It's my first time writing, but I've been reading this forum for a long time and I have to admit that... this site rocks! A friend of mine just had an idea. Instead of burning wood pellets in his wood pellet burner, he is considering uncrushed olive pits (yes, oil NOT removed). Well, they may have a higher heating value, but all this oil can't be good for the boiler, can it? Can anybody shed some light into this matter? Thank you very much in advance.