How little coolant can I get away with draining when replacing the thermostat? I know I've got to pull the hoses on the thermostat housing, and also loosen the bracket that holds the water pump. If I just drain a half gallon or so via the radiator plug, will that be enough to prevent a gush of coolant?
I just flushed it and put in all new coolant in yesterday. Then today I hooked up the Torque app to my bluetooth OBD II adapter and saw that it's getting up to 230 F while idling (vs ~210 while driving in the city). Granted, the ambient temperature was 97 F and the AC was on, but I'm thinking 230 is still too high. I should have looked at the temperature before I flushed the coolant. Lesson learned.
Alternatively I suppose I could just drain it through a t-shirt into a clean pan or something, then re-use it. What's my best bet here?
I just flushed it and put in all new coolant in yesterday. Then today I hooked up the Torque app to my bluetooth OBD II adapter and saw that it's getting up to 230 F while idling (vs ~210 while driving in the city). Granted, the ambient temperature was 97 F and the AC was on, but I'm thinking 230 is still too high. I should have looked at the temperature before I flushed the coolant. Lesson learned.
Alternatively I suppose I could just drain it through a t-shirt into a clean pan or something, then re-use it. What's my best bet here?
How much coolant to drain when replacing thermostat?
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