Thread: Tremec 3550 Question about shifts & fluids
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Old 06-16-2006, 07:55 AM
madmaxx madmaxx is offline
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So now you are relying on mr GED customer service rep. The 3550 was never a truck transmission. The royal purple has the highest viscosity of any, it would run the quitest. They are all GL-5 compatible so why he would say no to some and not the others is only his un educated opinion. Use the sychromesh.
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