I think you may have misunderstood what I was trying to do. I was trying to do kind of a scientific experiment to see how long the oil would last as well as if it was still clean or not. I have heard claims of Amsoil oil lasting for well over 15,000 mi and I was curious to see if this was BS or not. I do not plan on doing this every oil change for the life of the car (plus I'm running out of the cheap price test kits). Everyone believes that they have to change their oil every 3000 mi but few people on boards like this ever present real evidence that this is really the correct interval (car manufacturers usually recommend longer intervals and they hope to make money when their service people change your oil). I was trying to test, with a real laboratory analysis, what was really happening with my oil and how long it really holds up. The laboratory test not only tests if the oil is within spec but it tests for contamination by water, fuel, antifreeze, chromium, copper, iron, lead, tin aluminum and silicon. So cleanliness and various types of abnormal engine wear are also evaluated. As I stated before, the biggest surprise was that my K&N filter was actually working quite well (low aluminum, chromium and silicon). I've always been afraid that the increased flow of a K&N might result in poor filtration. Oh and a full change with Amsoil costs much more than $8 (that stuffs expensive, not sure if it is worth it).
PSM WRX Sedan
HKS MBC, Forge BOV, Defi gauge pod, Cusco sway bars, Kartboy droplinks, STI v2 front lip, stainless brake lines, STI foglight covers, Duffgaurd Diff protector