Maintain the braking system in your 2011-2016 Chevy/GMC 6.6L LML Duramax by replacing the brake fluid on a regular basis. Although brake fluid is sometimes one of the most overlooked fluids, brakes are one of the most crucial safety features of a vehicle. 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. Brake fluids are available in DOT 3, DOT 4, DOT 5, and DOT 5.1. DOT 3 and DOT 4 are the most commonly used brake fluids. DOT 3 is compatible with DOT 4 brake fluid however DOT 4 offers a higher boiling point. 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. XDP offers brake fluids from the top brands such as Lucas Oil, and more!