3,021 miles/7 months on filter. Aggressive driving, some below freezing temps. Oil used was Mobil 1 High Mileage 10W-30. It also spent a few months just sitting. I was very impressed with how the filter held up and would use one again. This is a Wix/Napa Gold clone, equivalent to the Wix 51040, Napa Gold 1040, AC Delco PF47, Fram PH3387A. It was used on my 1999 Pontiac Firebird with the Buick 3800 Series II. No torn pleats. ADBV was still pliable. The best part... I only paid $1 for this filter at a garage sale about a year ago.