My boat is a 2003 Commander Jet boat with a Marine Power 454 power plant. While running the boat in all types of water temperatures, the boats temperature gauge never gets off cold, (yes the gauge works). I've read numerous articles wherein on some boat a 4-port thermostat design, made by Hardin Marine. Does anyone on this forum have a history or knowledge of this issue that I've described. I'm new to forums, but will search this forum for similar posts........Thanks in advance.