DOT 5.1 Brake Fluid is a high-grade, synthetic brake fluid. The product exceeds the requirements of motorcycle manufacturers. Instructions for use: Replace the brake fluid every two years to continue to guarantee correct functioning Only use DOT 5.1 Brake Fluid when specified. Please consult your instruction book for the correct specifications Can be mixed with synthetic DOT 3 and DOT 4 Shipping price included. COD – no shipping fees will be added.