Yes, Klean Heat works just fine. I haven't done a side by side comparison running on Klean Heat vs. K-1 grade (stove grade) kerosene, but whenever I've run with Klean Heat (on any stove designed for kero), it's worked well. In the photo you see, I'm actually running on Klean Heat (which is a form of kero; don't buy that hogwash that it's a kero "substitute").

HJ