Review on 🌡️ Mishimoto Low-Temperature Thermostat (MMTS-F2D-08L) | Compatible with Ford 6.4 Powerstroke (2008-2010) by Pete Juarez

Works too well with an aluminum heatsink. The pair work well when it's over 85 degrees Fahrenheit outside, but in cold weather these trucks turn on the check engine light because they're not letting the engine warm up fast enough. It's under 55 degrees outside and almost impossible to get it up to operating temperature, with normal driving it doesn't get over 170 degrees even after an hour or more of hard driving. If you have an aluminum radiator DO NOT RECEIVE THIS or your truck will freeze which is no good for a diesel!