If your referring to my post "all these readings" tell me the trend of the cooling and with the external fan which acts like the road air will tell me the temperature it will run going down the road. This is accurate with fixed conditions. Driving has to many variables for initial testing. We are looking for the point where the engine temperature stabilizes at highway speeds. If the temperature keeps going up after a half hour as long as it don't get to 200 keep testing until it stabilizes. After getting these results recommendations to improve cooling can be given. G.M.
