Quote Originally Posted by rspears View Post
I've read that Harley Davidson uses it because it does not harm paint, but it seems that it's not considered a good "performance" fluid - DOT3, 4 and 5.1 are all much better high temp fluids. Sounds like nasty stuff!
Roger, I work at a H-D dealer and I've seen the effects of mixed brake fluids, it isn't pretty. Harley used DOT 5 for many, many years but changed to DOT 4 on their 2005 models. The change to DOT 4 was due to ABS being used on 2005 police bikes (though ABS wasn't available on civilian bikes yet). Harley slowly integrated ABS on its civilian bikes beginning with some of the 2008 models. With the release of the new 2012 models only a few days ago, all H-D models except the Sportsters are now available with ABS.

David, unfortunately, as Jerry and Steve said, replace everything in the system that's made of rubber.

Mike