This filter only saw ~2500 miles (in an SL2) with an initial fill of a gallon of Mobil 1 TDT and a top-off near the end of a pint of MMO. Solid filter, only did a short interval since I was using an HDEO to clean things up a bit. I wrote down the date code, kind of hard to read but this is what it appears to be: 111212D3 I had this filter over a jar for over a month. Looks like less than an ounce drained in all that time. I cut a couple slits in the filter and let it drain. There was an additional 5-6 ounces trapped in the filter. Media is perfect. It seems I could have gone much further with this cleaning cycle, but most recommend a very short interval when using HDEO in a gasser in case too much is cleaned up too fast. I guess I have done enough cleaning cycles and I have one of the cleanest SL2 engines around.