I thought the blue oil was to prevent the 'hooting' sound and the software update was to reconfigure it for the different coefficient of friction of the blue oil compared to gold? As I recall, but I may be wrong or partial recall, the TC on these has a slipping reglator clutch as well as conventional lock and unlocked, it can have a %age of slip and as the blue oil has different friction chracteristics to remove the hoot on another set of clutches it would also would cause a change in slippage of the TC regulator and so the software needs to be altered.
I assume you had the same problem before the fluid was changed?
Did they do an adapatation drive after changing the fluid?
Do you have VCDS software, cable and a laptop?
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