I have a 75,000 maintenance coming up on my 2010 Prius. I recall past discussions about the merits of replacing the transaxle filter & fluid at different mileage points. I've never done this but is this something I should perform at this time? It's never called for on the Maintenance Schedule, only "Inspect transaxle fluid" and that's not even indicated at this mileage point. FWIW - I'm driving less than 5,000 a year since retiring. Just want what's best for my car. TIA