Quote:
Originally Posted by smassey321
Was there pressure when you removed the cap? In some cases you can drive with the cap off and that will limit pressure and slow the leak.
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These modern cars will run at temps anywhere from 190 to 230+ and at pressures up to 20psi. The coolant will boil in minutes if the car is cracked or open. I have driven with open cap million miles with the old BMWs, but cannot be done in a modern one.