That's a dirty filter.
05-06 have them on the passenger side head as pictured and on the front of the drivers side head. You can file the top off the bolt, back it out, remove the filter without pulling the timing belt covers.
HAMMERDOWN did it and posted pictures.
I have mine removed when the new short block was assembled at the machine shop.
208,000miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
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