With the adaptive TCU shift points will change according to conditions. If I do a short trip on the freeway in D the tranny adapts to higher shift rpm.. when I return to traffic in the city.. at first it continues this pattern,.. over a period of a few minutes of being in slow n go traffic, the shift points come down until it will go into 5th gear at 35 mph.. so for me its a constant change deal.. I do wish there was a way to isolate the shift program that one prefers and have it as a default.. in other words, a way to switch off the adaptive brain when you have found the ideal program that suits your style..