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Old 02-01-2010, 01:29 AM   #45
67MellowYellow
 
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Drives: 2010 SS/RS ABM M6
Join Date: Sep 2009
Location: East of Seattle
Posts: 85
Quote:
Originally Posted by RandyB View Post
UPDATE: I drained out the RP and filled with Mobil1 Synthetic ATF (this is DexIII, not DexVI, so it is the right stuff).
Glad to hear it's working well for you. I'm sort of surprised since GM does not recommend straight DexIII anymore in the Tremec. I believe the GM specified trans fluid is a mixture of DexIII and friction modifiers for the syncro's. Perhaps the Mobil 1 has some properties that the straight GM DexIII does not have.
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