Just received my new Spinner II via UPS today ..... Okay What is a Spinner II. It is a Centrifugal oil bypass filter that is supposed to filter down to 1/10th of a micron and is supposed to filter 9/10 gallon per minute of oil. So here's the deal. Once I figure out how to fabricate a baseplate I'm going to install the unit with my old oil to see how good a job of filtering this unit does in cleaning up my filthy oil. I'll drive it for a few hours check the oil cleanliness via dipstick and then pull the bowl to see what kind of chunks it will filter out from my dirty oil... . I'll keep you posted. . (by the way it's a Spinner II model 25).