Q: Heat gauge is moving around rapidly to hot back to normal
The truck seems to be running fine no issues I recently flushed the radiator yesterday and added a 50/50 mix thinking it may help the issue , I also turn the heat on when the high seems to rise but the vent produces cold air. It has only gone to where the warning light comes on twice but it will constantly go from a very acceptable level to a close to red no matter if i am going 35 or 70
My car has 274000 miles.
My car has an automatic transmission.
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