Be careful who changes the fluid. Dealers only! Getting the transmission fluid changed at a local shop is what destroyed our transmission. It took about a year before it was so bad it was un-drive able. An expensive lesson. There is a very specific fluid to put in and way to put it in.
I have a 2011 Outback. My CVT went out at 80,000 miles. Cost us $8,000 to get a refurbished transmission. They were even on back order because this is actually becoming a problem.