Shell Rotella™ Diesel Exhaust Fluid (DEF) is a premium product designed to optimize the performance of your diesel engine while adhering to environmental standards. Our high-quality DEF is formulated to work effectively with Tier 4 Selective Catalytic Reduction (SCR) emission systems, reducing nitrogen oxides (NOx) emissions and contributing to cleaner diesel engine operation. Meeting the stringent requirements of ISO 22241 (AUS 32), it’s suitable for a wide range of diesel vehicles and equipment, including those manufactured in 2010 and later. Whether for on-road diesel trucks, cars, or off-road and stationary diesel engines, SHELL ROTELLA DEF ensures compliance with emissions reduction regulations. Use Shell Rotella™ DEF and know your diesel exhaust fluid is working as hard as you do to provide outstanding performance.