I did my 7500 mile oil change today. I switched from Amsoil To Mobil 1 V-twin although the price almost made me consider going back to convetional oil. the last time I priced M-1 early this past summer it was going for about $8 now it's up to $10. When i bought the Amsoil from my local HD dealer for my 5000 mile service it was $9 now it is over $11. the old oil had just a little discoloration to it. I didn't notice any metalic fuzz on the plug. I used Smitty's sugestion of useing a measuring cup to measure the amount removed and added the same amount which but at a little less than half way between the cold fill and hot fill mark on the dipstick. and I found that a deep paint rolling pan works very well to collect the old oil .It fits under the bike very easily and is easy to pour out of. I did ride for about 20 minutes to get it up to opperationg temp before the change. And I got a chance to use one of the torgue Wrenches I got for half price at Sears a couple weeks ago to torgue the drain plug. With the oil, Chrome oil filter and new O-ring it cost me more than it does to change the oil in both my truck and my wifes SUV together. Ohwell!