The Liqui Moly DEF Anti-Crystal Additive Concentrate is a specialised, ash-free formulation designed to protect the SCR (Selective Catalytic Reduction) system in modern diesel engines. This advanced additive prevents AdBlue® crystallisation, reduces deposit build-up, and optimises the performance and longevity of the entire DEF dosing system. By lowering the surface tension of the urea solution, the additive enables ultra-fine atomisation, ensuring efficient injection and improved system reliability. It also enhances the return flow of AdBlue®, minimising blockages and preventing costly SCR malfunctions caused by crystal formation.

• Prevents AdBlueu00ae crystallisation in the SCR system.
• Reduces deposits in the AdBlueu00ae tank and injection system.
• Improves atomisation by lowering surface tension for finer spraying.
• Optimises return flow, reducing the risk of clogging and system faults.
• Ash-free formula ensures clean, trouble-free operation.
• Helps maintain SCR efficiency, reducing emissions and improving reliability.
• Ideal for all diesel vehicles using AdBlueu00ae, including commercial fleets, trucks, and passenger cars.