Quote:
Originally Posted by Grady
The transmission fluid is good for the life of the transmission, just like the factory engine oil is good for the life of the engine.
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It's sound logic, although engine oil is somewhat of an open-loop system (lubricates the cylinder walls, also happens to be where the fuel is added/combusts if there's any blow-by). The transmission is a closed-loop system, where the fluid can't burn up or escape without intentionally being removed or a hole blasting through the transmission. Water can get into the engine too if say, you drove underwater. The transmission is still sealed up (you know what I mean lol).
I'll keep researching, but feel free to dazzle me with some science supporting this claim.