The dealership said I need coil packs for misfire codes and an oil trap. I tried to look up the parts on autozone and advanced auto.com but they didn't understand the parts names. What are the true names of the parts?
Thanks!

 

Coil packs are the coil's that attach to the spark plug. You can get them at your local Volvo dealer or depending on what engine your car has, iPd's HD Coils might work for you. Have you already tried new spark plugs to fix the misfire? A lot of these cars just don't run right on aftermarket plugs. Get OEM plugs from your dealer or ipd.

Oil trap is the Oil Separator Trap that is part of you PCV system. If you need a a new oil trap, replace the entire PCV system.

PCV System...
http://www.ipdusa.com/Volvo-S60-P2/F...-1-74-396-928/