1376 mile cut-open on a Purolator PureOne PL24651 filter. 135,093 miles on the 2001 Ford F-150 with the 4.6L V8. I've had the truck for about 8,000 miles. I had done a fresh oil change with Valvoline 5W20 conventional oil and added 12 ounces of Auto-RX. I did the 1500 mile filter change a little early but it looks like it's doing its job!