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T56 Trans Fluid. What do you suggest?


Fubar231

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You can get the service manual from the Tremec website. Looks like you need to create an account on their forum.

 

http://tremec.com/performance/forum/showthread.php?t=12

 

Unless you have anything upgraded I'd go with whatever the factory recommends. It was quite a while ago but I remember reading something about problems with Royal Purple in stock T56s.

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Changing to Redline gear oil was like night and day on my car compared to OEM Mazda trans fluid or GM-style synchromesh fluid. It's about $40 or so for the "big" one size will do it jug. Been running it for ~30,000 miles with next to no gear grinds or anything out of the ordinary.
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