8/8/2023 0 Comments Dexcool coolant booling temp![]() Short of liquid sodium, 100% water is about as good as it gets for moving heat around (ie specific heat, and heat transfer). The more antifreeze the worse the coolant moves heat. It's also 110+ degrees outside.Īs dishdude says, antifreeze will raise the boiling point for a certain pressure, but what he didn't say is it reduces the cooling capacity. She can't currently afford to have it fixed or buy another car and we'd like to limp it along for a while. Just trying to make the best of a bad situation with the car. The electric fans work perfectly as well. She just needs to be able to get to work with the car and it doesn't overheat on the freeway, but once stop and go is incorporated it starts to run warm. It's been losing coolant for just over a year now. I know that isn't scientific at all or very accurate. The oil level is perfect and looks great, every time I change it it looks fantastic. The car does leak coolant (water) somewhere, probably the intake manifold gasket. I'd like to know what mixture of antifreeze and water would make it run the coolest, I have a gallon of Dexcool concentrate. The car has only distilled water in it and no antifreeze. It has a new Murray "high flow" thermostat in it. The thermostat stuck closed in May and she overheated it and blew the head gasket. So my mom's 2003 Buick Rendezvous 3.4L is overheating. Just trying to do my best with what I can. First off I'd like to say that I do understand this car is going underwater and sinking fast and probably won't last much longer.
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