I wound up changing mine at 33,000 miles even though it still "rattled" when you shook it...I will be changing mine from here on out probably every 2 or 3 oil changes which equates to
6,000 to 9,000 mile intervals...as so many have said it is a small price to pay for some piece of mind...approx $3.99 and 5 minutes or less of your time.