Truck questions
195 to 210 is probably about normal for the temp because of the fuel injection. Probably has a 195 degree thermostat and clutch fan kicks on around 210. As for the rear end, howling is not good. But if you do change the rear end grease, make sure you put hypoi back in it. You can buy this seperate and add it or at oreilly or autozone you can buy the hypoi grease. Late model dodge rear ends require this or it will get real jerky in turns...Hope this helps, Lee