The Duramax has proven to be a reliable engine since its introduction back in 2001. Generally, most owners and service techs are well aware of the importance of keeping a clean fuel system by running clean, high quality fuel, lubricity additives, and routine fuel filter changes along with all other required maintenance. When problems do arise from the fuel system, the first method of diagnosis is often a balance rate test. There are a lot of questions we get about balance rates and we would like to help clarify what they do […]