This run was 6 months almost to the day, 5 months and 3 weeks were ~3,000 miles of all short trip in town use, the last 2,000 miles were added in a week driving to and from Hot Rod Drag Week and driving the 1,000 mile route during Drag Week plus 5 days of racing during Drag Week, 213 hours of driving time and 102 idling total of 315 hours this go round with a moving average of 25 MPH. Pleased with the Iron reduction on a PPM/Mile basis compared to previous samples. Filter was an older (2013) TG3614 which held up beautiful and is shown HERE . Previous oil used was Rotella T-4 10W30 CK-4 with a Napa Gold 1348. New oil in was 5 more quarts of Delo 15W30 SD and a TG8614 filter. Enjoy!