1993 Buick Park Avenue Owner's Manual - Page 229
1993 Buick Park Avenue Manual
Page 229 highlights
6. Start the engine and let it run until you can feel the upper radiator hose getting hot.Watch out forthe engine fans. 4. Then fill the coolant recoverytank to "FULL COLD." 7. By this time the coolant level inside the radiator filler neck may be lower. If the level is lower, add more of the proper mix through the filler neck until the level reaches the top of the filler neck. 5. Put the capback on the coolant recovery tank, but leave the radiator pressure cap off. 227