Just got the car the other day (Duster) When I got out on the road good, the temperature got up to the top-end of the range (not the 250 max, but the end of the little normal range area before it). I freaked out for half a second then it went back down to whatever. I figured the thermostat opened and never had an issue with the gauge showing high after that. Well, I checked the coolant afterwards and it was like half a gallon low, so I figured whoever I got the car from drained it or did whatever then topped it off without putting the rest in. Anyway, the car runs fine, there's not smelly coolant smell after driving, and it doesn't appear to be leaking. My question is about average running temperature: when you crank the car and get driving, it never really gets that hot. The gauge shows about a half a pinky-nail past where the normal range area begins and stays. I got a digital probe thing on the way to check the temps. Also, I changed the radiator cap for good measure. Thanks!