Hi, how are you? I'm Steve. Well, I love to make a suggestion for a major improvement of the construction of the cylinder head of a vehicles engine. Today, the thing with it was that the cylinder head was bound to crack after a while, as a matter of fact. Depending on the design of the engine, instead of the cylinder head the engine block will crack. It cracks in some place with actually zero mechanical stress to the spot that cracks. After some thinking and trying of all that could be done I mean the metal cracks because of the change in temperature while the warm up time of the engine and the the time it takes for the engine to cool down again. Precisely said, the reason the engine cracks somewhere was the fact that the camshafts bearings be oiled from down up. Now, when the engine is powered off the oil in this bearings goes down to the oil pan again. The heat stored in the oil goes down to the oil pan too. Design side, cylinder head and engine but are designed as to be one. Therefore, there can be suggested to be something just as a balance between the two. However, the oil is lost in the cylinder head on engine shut down. Today, it (the cylinder head), most of the time, will cool down in a warp. Because, it is being fixed to the engine block in a way that both of the two (cylinder head and cylinder block ) had to cool down alike. Prior, the same goes for the reverse process (the warm up of the engine). The engine is designed to take on the heat of the combustion as one. Any volume the engine is made of takes part in storing the heat and in the release of it. When the oiling for the bearings were on top of the camshaft bearings it could do just like as it is designed - cool down as one. The oil could be kept in the bearings even if the engine is shut off and the heat stays, as well. After a long thinking about the matter I come the the conclusion only Ford Motors is bound to improve its engines like this to take this improvement to the global markets. This improvement will be crucial overall for more safety, enhanced customers satisfaction, a greener future... anything. Although I personally think about electricity to replace combustion engines for a 100%, in one or the other way, perhaps this improvement still is missing in between, somehow. Sincerely, Steve