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Originally Posted by sawdust2
My Grand Prix GT with a 3.8 motor, has 107,000 miles. I don't know if the filter has ever been changed. Which is best, drop the pan and install a new filter and oil, or have it flushed? It shifts just fine with no problems at this time.
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Flushing has killed a lot of transmissions.
Just new filter and new fluid to fill it back up is a lot safer and better.
And no dope or additives.