Review on 🌡️ Mishimoto MMTS-CHV-01DH High-Temperature Racing Thermostat for Chevrolet GMC 6.6L Duramax (2001-2016) by Alfonso Wilson

I had trouble heating my Duramax 06 in winter. Even with the radiator closed my engine temp only rose to 158 degrees (according to my edge scanner), I'm sure I could get away with factory thermostats. I chose hotter ones so my warmth works better in winter. Installation was very easy and once I installed it, my truck hit the 180 freeway. Even in the summer, pulling a 9000 lb RV full of ATVs and a 4 person truck with the A/C on was 98 degrees. Climbing the biggest hill en route to New Hampshire, he only climbed to 210 before falling back to 195 for the rest of the trip. I have absolutely no complaints about this product!