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Old 06-04-2013, 04:49 PM   #12
DangerZL1


 
Drives: 2023 Black ZL1 Auto
Join Date: Oct 2009
Location: FEMA Region 4
Posts: 2,935
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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