This filter was in use for 1 year on an Exmark Zero-Turn mower with the 708cc Chonda V-Twin, the interval was about 40 hours of use. Looks pretty decent for a $4.99 filter from Autozone. This is a from a customer's mower, who usually provides his own ExMark/Toro filters, but the last change it seemed the wrong filter was in the kit he bought, since it wouldn't thread onto the engine. It must've been for a Kohler or something (filter was unbranded with no numbers), so I used this filter instead in a pinch. An ExMark branded filter replaced this one for the upcoming season. The ADBV on this filter seemed a bit hard, but other than that it held up very well.