Sounds like crap to me. Ive been reading up on AT's a lot lately (My 350z has one) and this runs completely counter to everything I've learned. Certain Nissan vehicles (like the 350z) require special non-standard AT fluids though, so you might want to give a dealership a ring and ask them.
Autoway Nissan Of Brandon is really good about answering questions I've had in the past.
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