1994 Buick Roadmaster Owner's Manual - Page 207

1994 Buick Roadmaster Manual

Page 207 highlights

If you hear a hiss, wait for thatto stop. A hiss means there is still somepressure left...,. 2. Then keep turning the pressure cap slowly, and remove it. 3. Fill the coolant surge tank with the proper mix, up to "FULLCOLD."

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