filters usually do not loosen up; they tighten up. I would pull the filter and make sure that the o-ring seal from the previous filter isn't stuck to the block when the oil was changed.
I'll add that if there isn't an extra o-ring in there I'd swap the filter anyway, just for piece of mind. Grab a new filter before you pull that one off so you can do it in one shot. Pretty cheap insurance.
Last edited by camcojb; 10-22-2011 at 10:12 PM.
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