I am surprised it has a "new" T belt. They are good for 70K miles.
Keep using Mobile 1 10W30 and Mann filters.
If it is an automatic, time to change the tranny fluid.
As to the radio, same "good" sound as the 740. The antenna probably just needs a new mast. Pull out the old, put in the new one. When you turn the radio on, without volume, listen for the antenna motor to verify it is working. The motor is behind the cover on the left hand side.
If the trunk closes with authority, you might need new trunk struts :)
Klaus
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Just driving a 1998 V70R :)
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