LIQUI MOLY to Prevent Engine Damage

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DIJectron Photo: LIQUI MOLY

LIQUI MOLY has developed an additive that significantly reduces engine damage risks: DIJectron. 

Modern, high-performance engines with direct injection, suffer from an increased risk of premature ignition at low engine speeds (LSPI – low-speed pre-ignition). Here the gasoline/air mixture ignites spontaneously in the combustion chamber before the ignition spark is created. This knocking can cause serious engine damage. This phenomenon is not entirely understood yet. The contamination inside the engine certainly plays a role.

The LIQUI MOLY’s new DIJectron contains polyetheramine (PEA) as an active ingredient.

Direct-injection turbocharged gasoline engines

Modern direct-injection turbocharged gasoline engines have a highly stressed injection system. The injection nozzles reach directly into the combustion chamber and are therefore exposed to high temperatures, pressures and the influence of combustion residues. Deposits form at the nozzle outlet openings within a short time, ensuring that the gasoline is no longer atomized so finely. This worsens the emission values and increases fuel consumption. The deposits can begin to glow due to the high temperatures, which can then lead to LSPI.

DIJectron can be used at any inspection. It is so effective that it only has to be added every 3,900 km. It is suitable for all cars with a 4-stroke gasoline engine, especially for direct injectors but also for cars with intake-manifold injection.


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