A little known brand known as Honda calls for an oil change at 7500 miles on my car and a new oil filter at 15,000 miles -- every other oil change.
It never hurts to follow the Owner's manual even though we know it was written by idiots and 3,000 mile oil changes are necessary. Expedition 3.5EB oil and filter change schedule is 10,000 miles or 12 months. Still wondering what the issue is with changing the filter at 10,000 even if the oil was unnecessarily changed before then. Changing pure synthetic is probably not necessary even at 10,000 miles according to my oil analysis and the oil is certainly fine after 12 months and less mileage. (But I change the oil and filter annually -- much less than 10,000 miles normally -- to get rid of the nagging dash "warning.")
Since we're no longer using vegetable oil for motor oil it doesn't go bad in a year or two. Mileage and abuse are something different.
-- Chuck