2005 XC70 transmission oil

[Grudzibp]

Hi everyone, I have a 2005 XC70 with 175K miles on it. I bought it with 110K. It runs great! I've heard that changing the trans oil on such an old and high mileage car can do more harm than good. I haven't changed it yet and not sure if previous owners did. The dip stick color is not terrible, but definitely not super clean either. I drove the car about 5K miles per year and hope to keep it for about the next 7 years. Would you change the trans oil or not mess with it? Why or why not?