I have a 1997nissan altama and it over heats bad is it for sure a blown head gasket
Try the radiator cap. If its seals are bad can cause overheating even pegging the red..
And if there is water in the oil yes you have a bad head gasket
If it is blowing white smoke out the exhaust or if it has oil in the coolant or coolant in the oil then yes your head gasket is gone. A cracked head is also a possibility if you have overheated the car badly.
Aluminum heads, getting hot, chances are they are warped now, causing head gasket to leak...
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