Expansion tank stays full
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As background, my 2013 XFRS had the plastic bits, water pump and thermostat housing replaced back in March, 2023. The expansion/overflow tank has maintained the same level of mid point of the cold level indicators. Past month or so I’ve noticed the tank remains completely full up to the cap. Sitting overnight doesn’t change the level. There are no codes or dash warnings. Removed approx .5 liters of fluid but level hasn’t decreased. Hoping someone has suggestions.
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#6
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More than a year later of normal coolant levels, and then you have an air pocket show up? Seems unlikely.
I would do a test for exhaust gases in your coolant to see if something else is going on. You could have a head gasket issue that is just now showing up and pumping air into the coolant system. Did you overheat your engine just before the cooling system parts were refreshed? Often, the cooling system refresh is done reactively to a coolant leak that could have caused overheating.
I would do a test for exhaust gases in your coolant to see if something else is going on. You could have a head gasket issue that is just now showing up and pumping air into the coolant system. Did you overheat your engine just before the cooling system parts were refreshed? Often, the cooling system refresh is done reactively to a coolant leak that could have caused overheating.
Last edited by lotusespritse; 06-17-2024 at 10:47 PM.
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