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This particular bottle is knows as a degas bottle. The reason it has a strange shape is two fold. First, the bottle needs to fit somewhere and the shape helps that. Second and more important is that these degas bottles hold pressure. The shape reinforces the bottle so that it does not explode. In cooling systems with degas bottles the coolant does not ...


I would check the water pump, it sounds like the blades may have corroded away. From your description it certainly sounds like the water isn't circulating.


I'm in general agreement with Ben. Cooling fan not working. The description of high vehicle speed = okay and low speed not means your fan isn't working for you. This could be a problem with fan controller, fan motor or temp sender used to turn on fan. Note, the fan shrouds matter big! Ensure they are sealed off to radiator correctly. Please check the ...

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