I purchased my '02 Superglide in October of 2010 with 13,000 miles on the bike. Unknown to me at the time is that the stator was already bad on it. The owner had purchased a new battery for it so for the first couple hundred miles the bike was running off the battery. Once the battery went dead I found myself dead on the road thinking I had just bought a lemon! I have no idea what kind of fluid or services had been done to the bike. However, I got the stator replaced and haven't had any further problems for the past 5,000 miles. I currently run formula+ in the primary.