BlackBrick Posted November 28, 2020 Report Share Posted November 28, 2020 2012 Volvo C30. I drained all coolant from radiator (using red plastic drain), and engine block (using hose going into the oil cooler behind oil pan) I assume the only coolant left in the system was heater core. Upon refilling, it only took 1 1/2 gallons of coolant mix. Is this right? I thought I read the cooling system was 3 gallons. No way 1 1/2 gallons was left in heater core. The car reached normal temp no problem, and ran fine. ? Link to comment Share on other sites More sharing options...
Ihatespeedbumps Posted November 30, 2020 Report Share Posted November 30, 2020 That's about how much you put back in when the lower radiator hose is replaced, so I'd say you are right where you need to be. Link to comment Share on other sites More sharing options...
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