Diesel exhaust fluid (DEF) is nothing new. GM’s Duramax-powered Chevrolet Silverado and GMC Sierra 2500HD and 3500HD pickups have had used the stuff since 2011. So has Ford’s F-Series Super Duty.
General Motors' LBZ Duramax Engine is one of the most reliable engines ever built. Over the years, the LBZ and other Duramax engines have carved out a reputation for durability, reliability, and long ...