Replace the contaminated brake fluid in your 2006-2007 Chevy/GMC 6.6L LLY/LBZ Duramax before it starts to affect your braking performance. Although the brakes are an essential part of your driving experience, brake fluid is often one of the most neglected fluids in a vehicle. It is very important to follow the manufacturer's recommended service schedule for replacing the brake fluid. Manufacturers often recommend replacing the brake fluid every 2 to 3 years or at specific mileage intervals. There are several different types of brake fluids available, including DOT 3, DOT 4, DOT 5, and DOT 5.1. The DOT 3 and DOT 4 brake fluids are the most commonly used. DOT 4 has a greater boiling point than DOT 3, despite the fact that the two brake fluids are compatible. Brake fluid can eventually start to absorb moisture from the air, even though it is a closed system. Your braking performance will suffer as a result of this water contamination, as the boiling point of the brake fluid lowers. Shop XDP for a wide assortment of products from all the leading brake fluid brands such as Lucas Oil, and more!