Approaching ~150 miles after adding a bottle of the LG red. Seems to be chugging along just fine. Actually did some logging yesterday of the auto trans and based on a convo with some experts in the W8 world, it seems this "hiccup" I call it is just the torque converter lock/clutch engaging which drops the RPMs a bit - the logs shows it clearly...it just happens slower than I would expect....clutch partially engaged....clutch engaged. To me it should be smoother but the activity seems to be "normal" with no faults/errors etc. Runs/shifts well. I will just do another drain and fill (and filter) with the ZF kit from FCP Euro this winter for good measure and I'll add a bottle of LG red again.