It turns cadillac puts the pellets in from the factory and calls for them at every coolant change. From everything I've read online and even from the company I bought the stud kit from, no one has yet to see a warped northstar head. They overheat all the time and are fine afterwards.
I have the car back together, just need to bleed the brakes, change the oil, and charge the battery and it should be good to go. So we'll see in a few days how it really is.
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