Our S80 had 115k kays on her at the time of the trans flush, and she was an ex-Volvo Australia owned car. When Stu did the fluid flush, it was tired fluid but not completely black. So we figure she had either been driven by Grandma before we bought her, or she's had a fluid flush sometime in the past.
Stu was kind enough to take videos of the fluid flush, before and after the process was completed. Here are some screenshots.
I highly recommend Stu for doing Volvo repairs - only hassle for us mountain-dwellers is he's the Sutherland area.
Annlynns refused to do the flush as they said it wasn't a Volvo-recommended procedure.
We'll be changing ours every 40,000 from now on if we tow anything, and every 60,000 if we don't.
The official Volvo line is the TF80SC transmission 'is sealed for the life of the transmission and does not require fluid changes'....