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Got back from the Dealer,
There is NO drain plug on the diff, but there is one on the 6mt trans.
However
There is a BIG sticker on the trans, telling you not to change the fluid.
The fluid spec is a LT3, changed from the LT1 on the previous generation transmission.
The Sevice Advisor will check with BMW to see how we can change the fluid, and not void the warrenty.
While BMW says it is sealed for life, they do not specify the definition of the life of the trans.
Asuming it will last the life of the car's warrenty on the original fluid, 60,000 miles is not good enough for me.
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