I believe a cleaning and a light appropriate oil in gears and such is all the routine service I have ever done to mine. I have 5000s and 5500s , I have used 6500 in the past and was completely happy with it. The 5500 is my prefered muskie casting reel and it is great for it. The 6500 was a boat rod for bluefish and bonitos in a past life, a baby blue fin tuna made one huge run on it ,emptied it of 15 lb test and drag never worked again.......
