What is the correct M6 fill volume???
I just drained the transmission, '05 M6. The factory service manual says 4.6 qts. to refill. It also says remove the back up light switch and fill until oil is level with the oil switch port. I have filled with 5.5 qts so far and no oil coming out of the back up switch port. Anyone else run into this discrepancy? How much oil did yours require? Thanks for any feedback
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