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!
Upgrade Your Driving Experience With Lunsom'S Automatic Shift Knob: High-Quality Metal Car Shifting With Push Button & Long Stick Gear Head In Black
38 Review
Upgrade Your Mazda MX-5 Miata With CravenSpeed'S USA-Made Door Bushings
39 Review
Replace Car Bumper Clips: GOOACC 100Pcs For Nissan, Mazda And Infiniti, Including Fastener Remover
33 Review
Off-Road Fender Flares For Jeep Wrangler 2007-2018 JK & JKU Unlimited - Heavy Duty Flat Textured Steel Mud Guards In Black (Set Of 4) By Hikotor For Front And Rear Replacement (2 Or 4 Door Options)
47 Review