My engine has done over 3000 hours now, and apart from a slight oil leak is still running well. I wrapped the heat exchanger when the engine was installed. The boxer does not produce nowhere like the heat im guessing simons titan machine produces but I defo gained more heat when cleaning. My machine does not dump a lot of water and tends to only dump when its been running for 15 - 20 mins with no cleaning. I was always shocked at how much heat was coming off the exhaust pipes and was circulating around the engine. Since the heat wrap its been so much cooler in the engine area. I want to put a new engine in soon but only because I want to run lpg and have been told that b and s engines dont take well to running lpg.