My miles are beginning to climb so I'm proactively thinking about changing the transmission oil soon as time constraints will not allow it in the very near future. I haven't come across any info on this topic yet. Would be using only true OEM MOPAR transmission oil to minimize any finger pointing in the future. The (my) real question is: has anyone done this already and what is the the drain /refill procedure since this model has no dip stick. Any info will be greatly appreciated.