Originally Posted by johnnyreno
Are the Allison trannys being filled with the syn, transyd or dexron that are coming out of the factory any one know for sure. thx in advance
The trans is tested with TranSynd, then drained (mostly). When installed in a chassis it's up to the chassis manufacturer to refill the trans. When we took delivery of our 2002 DSDP it had Dexron in it so I did the two change changeover to TranSynd.
Sometime around 2004 ALL chassis manufacturers used TranSynd and have ever since especially now that GM no longer licenses Dexron III.
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