[rotorwrench]

I generally leave the clutch disengaged at a stop but the input and cluster can be stopped by shifting the transmission into 2nd to stop it. Sometimes shifting to reverse will do the job since it works through an idler but it depends on how fast the counter shaft cluster is turning at the time of the gear change. I just find it easier to shift to 2nd then shift into 1st. Use of high viscosity gear lube in an overdrive could be problematic. They always recommended SAE-80 in winter and SAE-90 in summer. I still use SAE-50 grade 100 aircraft engine oil in my overdrives. Motor oil and gear lube are graded differently so SAE-50 motor oil equals SAE-90 gear lube.