Expansion tank question?

Devon

broke my curse
May 2, 2010
807
0
0
Hinsdale ma
Ok, just would like to know how a degas tank actually operates on our trucks. It seems like sometimes the coolant is above the seem on the tank, which would be hot full level? Then sometimes it will stay right at the seem even if I pound on the truck all day, then it'll get cooled down and go alittle lower then the cold full mark. Seems like it's always different,. Shouldn't it work as the coolant gets hot, it should be a inch or two above the middle, then once it cools.goes down to the middle mark? Inform me if I am wrong, thank you


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