Hi again, Has anyone had any experience with these Finned Billet Aluminum Heat Sink Oil Coolers? The ad for them says they were sold by Harley, and listed in their catalog, in 1997. They are a finned piece that slips over the filter and is supposed to lower oil temps by 20 degrees. I can see how the fins would help in disapaying heat but 20 degrees? Just wanted some opinions. Thanks all