Quote:
Originally Posted by DangerZL1
Draining the lines and cooler would have no effect on the noise. The cooler is running transmission fluid and doesn't mix with the rear diff fluid.
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Correct me if I'm wrong, but if there is a feed and return line going from the diff to the front of the car and ran thru a heat exchanger, than there will be old gear fluid in those lines and hx unless flushed.