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Removing the radiator is a pain. Worse it trying to replace it. I bought three of them, sent two back, and saw that the third was almost right. The one that I kept I brought to a radiator shop and the core was a close enough match that they were able to use it to fix the old radiator and I put it back in the car.

If you want to flush it, just use a flush machine.

If you want to drain and fill, it's like any other car.

With any 60 degree GM V6 look for as many as two bleeder valves, and consider using a vacuum fill tool to prevent damaged cylinder heads.

If you want to drain and fill a 2.5L I4 engine, filling is special:

Do not remove the radiator cap. This it important.

1)Remove the thermostat housing cap. Remove the thermostat, then add coolant though the opening.

2)Put the cap on, then start the engine and let it idle for about 15 seconds and shut it off.

3)Remove the thermostat housing cap, top off the antifreeze, then install a new thermostat. Put the cap on.

4) Check and correct fluid level in the overflow bottle.

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โˆ™ 2007-10-14 01:59:14
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Q: How do you remove radiator and or flush a 1991 Olds Calais?
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