Maintain proper performance of the braking system in your 2007.5-2010 Chevy/GMC 6.6L LMM Duramax with new brake fluid. Several manufacturers advise replacing the brake fluid every two to three years or at specific mileage intervals. Both regularly testing your brake fluid and replacing it at the manufacturer's recommended maintenance schedule are crucial to maintaining your brake system's performance. Brake fluid is one of the most frequently ignored fluids when it comes to basic maintenance, despite the fact that brakes are one of the most important safety aspects of a vehicle. DOT 3, DOT 4, DOT 5, and DOT 5.1 are just a few of the brake fluids that are readily available. The DOT 3 and DOT 4 brake fluids are the most commonly used. DOT 4 brake fluid has a greater boiling point than DOT 3, despite the fact that the two are interchangeable. Despite being a closed system, brake fluid will eventually begin to collect moisture. As a result, the braking performance will begin to suffer due to the decreased boiling point caused by the water. Shop XDP for a wide assortment of products from all the leading brake fluid brands such as Lucas Oil, and more!