What type of brake fluid does Harley use?
When it comes to brakes, Harleys need a very special juice: Silicone-based DOT 5 brake fluid. via
How do you bleed Harley front brakes? (video)
What color is Harley Davidson brake fluid?
HD's is purple. DOT5 needs to be changed out about every 3-4 years., where as DOT4 needs every 2. Purple will turn a light "cola" color as it ages. via
What color is motorcycle brake fluid?
Most brake fluid is slightly yellow or amber color. If it looks clear when your bike is new, it won't be that clear in a week or so of riding. That doesn't mean it is bad. via
Can DOT 4 and DOT 5.1 be mixed?
Since DOT 4 and 5.1 are both glycol-based brake fluids they are compatible with each other, which means they can be readily mixed without harming your brake system. via