The engine holds about 2 gals of the 50-50 mix. I would plan on replacing the reservoir cap regardless, so when the engine coolant level is correct and the level does not drop after the cool-down period, install the new cap and retest to see if it still overheats.Īny repairs / work done to the engine recently? Does the temp gage start cold and climb to normal or does it start at normal operating temp when you first start the engine? Shut the engine off and let it cool for 20-30 mins and repeat the process if necessary.
start the engine and let it run for 5-10 mins with the recovery reservoir cap OFF, or less if it starts to boil over. ( Be sure to use Dex-Cool coolant and drinkable or distilled water to a 50-50 solution.) Check it with the engine cold not running, fill it within 2-3 inches of the top of the recovery reservoir. Seventh thing is any combination of the above.Ĭheck the coolant level FIRST. Sixth thing is very low coolant level in the engine ( the coolant sensor HAS to be submersed in coolant, it will NOT give an accurate temp reading if it is surrounded by air ). Fourth thing is a stuck or only partially opened thermostat. Shell and Prestone are private companies that sell Dex Cool. Finish off your universal antifreeze with DexCool. Third thing is a plugged or restricted bleed line to the coolant recovery reservoir. Adding green coolant to Dexcool will reduce its adequacy from 5 years/150,000 miles to just 2 years/30,000 miles.
Second thing is a defective pressure cap. First thing that comes to mind is a defective coolant temperature sensor.
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