FWIW, I have an 07 S60 and I plan to get another tranny flush soon as I feel the car is getting sloppy when speed is around 40-50 MPH - and the car struggles to figure out whether it wants to stay in 4, 4th lockup, or 5 (at around 48MPH). I acquired the car with 65k for a decent price and had the tranny flushed at 70k with Mobil 3309 as a precaution. I now have 94k on it and plan to flush soon, figure a 30k interval is good as I near the 100k mark.

During the cold bitter winter in MA this year I took the car to a local dealer for an oil change. They are nice people and offered to perform a CAN update on the modules. Let me tell you, this had an immediate improvement on the overall shift quality of the car and the best part is that it was free under the Volvo free software with normal scheduled maintenance deal :)

I am very happy with the car, audio system is mediocre in my opinion but the seats are typical Volvo - awesome....I still do miss my previous S70 and subsequent V70XC. I feel the 1998 versions of these cars were some of the best around. I really do enjoy the S60 though and plan to keep her for as long as possible or until I decide on an upgrade to the current chassis S60 ;-)

Regards
Steve