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Hello everyone , I have a 03 z06 with 120k on it . Recently I noticed there was a pin hole on top of the overflow tank , which I ended up replacing . Other thing I noticed was car was running hotter then what it used to be .Sitting in garage would go up to 230F then it will go down to 220F . As soon as I start the car I can see bubbling in the coolant tank too . I took it to the dealer and they said it was blown head gasket . I asked them if they did pressure test and they said no it wouldn't do nothing since its internal leak . Not sure if really can believe them yet before I start spending $3000 that they quoted me for . Anyone had similar problems that was it trapped in cooling ?

[QUOTE="Beli, post: 83122, member: 2818"] Hello everyone , I have a 03 z06 with 120k on it . Recently I noticed there was a pin hole on top of the overflow tank , which I ended up replacing . Other thing I noticed was car was running hotter then what it used to be .Sitting in garage would go up to 230F then it will go down to 220F . As soon as I start the car I can see bubbling in the coolant tank too . I took it to the dealer and they said it was blown head gasket . I asked them if they did pressure test and they said no it wouldn't do nothing since its internal leak . Not sure if really can believe them yet before I start spending $3000 that they quoted me for . Anyone had similar problems that was it trapped in cooling ? [/QUOTE]

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