I decided on my new car I'm going at 100 miles and get the oil filter changed and oil topped off. I figure if there's any bits they'll be loose by then and trapped in the filter. It will cost me about $25 at my local shop. Then I'll go with once a year oil changes which with my driving will be 3k-3.5k miles. It probably isn't necessary but I figure for $25 it can't hurt anything and it's extra peace of mind.