Base on the UOA's, 100K miles in a CX5 is equivalent to 300K miles or so on a conventional transmission's fluid. I don't know anyone who would say, regarding a normal transmission "IF you don't change the fluid, it will die before 100K miles". So I am content to let it lay. If my vehicle is still alive in 300K miles, noone has hit it, etc. then I may lament my decision, but I can't argue it owed me anything at that point ,either. Also, we all seem to agree that if you DO change it, every 75K miles is a maximum interval, and that's 4x fluid changes. Consider that I had the transmission in my Infiniti changed out for $1250, parts and labor, and it begins to become very suspect if I'm looking at saving money, or not...(dealer cost on the Infiniti was $4500, got it used and installed at a local shop. On a vehicle 10+ years old...that's how I'd do it again). With as popular as the CX5 has been, I doubt it would be an issue at all finding a low-mile totaled vehicle's trans that would fit mine.
