Thread: What ATF to use on Tremec T-56
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Old 06-26-2017, 05:35 AM
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jetblue69 jetblue69 is offline
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Straight from the TREMEC website - Probably a good idea to ask them since they're the ones that invested all that money in designing, building and testing the thing...

Transmission fluid is the life blood of your transmission. Proper wear and synchronization depends on using correct fluid. DO NOT USE aftermarket fluid in this transmission. Use only GM Synchromesh (part# 12345349), Pennzoil Synchromesh or Mobil1 ATF. Any other fluid used may cause premature wear and grinding synchronizers and will VOID YOUR WARRANTY.

NOTE: You can use standard Dexron III ATF for break-in, but it must be drained after the break-in period and replaced with Synchromesh or Mobil1 ATF as your permanent fluid.
Last edited by jetblue69; 06-26-2017 at 05:41 AM..
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