I bought a 2019 Dodge Ram 1500 Clasic 4x4 brand new. I was changing the antifreeze in my tractor and jeep and just decided to check my truck for curiosity. Since its new I didn't feel like I needed to. It floats 3 balls in the checker and the 4th ball about halfway up. 3 balls +5 degrees. Shouldn't it be at least -25 degrees? I'm in north central Arkansas.