I agree with your 5K oil change intervals. I've been doing 5K oil change intervals once I started using Mobil 1 synthetic oil.

In my opinion 2.5K oil filter changes is overkill. The oil filter element (for the 3.2L engine) is sufficient in size to handle 5K filter change intervals. You might want to inspect your oil filter element when you change your oil to see if it needs to be changed more often.

__________________
Ray
1998 Mercedes E320, 200K Miles
2001 Acura 3.2TL, 178K Miles
1992 Chevy Astro, 205K Miles