What tye of brake fluid for a 2003 dyna wide glide?

For a 2003 Harley-Davidson Dyna Wide Glide, you should use DOT 5 brake fluid, which is silicone-based and non-hygroscopic. It's important to avoid using DOT 3 or DOT 4 fluids, as they are glycol-based and can damage the brake system. Always check your owner's manual for specific recommendations and ensure the brake fluid is compatible with your bike's components.