Volvo Repair: 2002 Volvo S60 ~ Fluid Replacement Questions, coolant fluid, k and n filters

Question
2002 Volvo S60 with 60K miles.  When replacing the transmission fluid does the transmission pan need to be removed?  Are there filters or screens inside that need to serviced? Or will simple fluid replacement be enough?  With the coolant fluid replacement, should I use a 50/50 antifreeze mix or some other combination?  Does the power steering use the same as transmission or something else? Lastly and off topic, are K & N filters for these types of car a benefit?

Answer
Bryan.  No, no, yes. Coolant replacement still should be 50/50. Power steering doesnt need to be changed.  Just check it and top off when neccessary.  K and N filters are great.  You will notice a little different and save a lot of money on not buying paper filters.  Roger