Most German auto manufacturers and service providers recommend replacing brake fluid every 2–3 years, regardless of mileage, because it absorbs moisture over time, lowering its boiling point. Following this schedule can help you maintain optimal brake performance and avoid internal corrosion of the brake system. Silicone-based brake fluid has a much longer service life and a different maintenance schedule. Please consult your vehicle owner's manual or ask the brake specialist at Stadium Auto Service to see if your vehicle uses silicone brake fluid.