- 4min
Expert knowledge on low speed pre ignition (LSPI)
Modern, high-performance engines with direct injection, suffer from an increased risk of premature ignition at low engine speeds. The term “low speed pre ignition” (LSPI) refers to the premature ignition phenomenon in the engine. It describes an undesired combustion before the planned ignition. The premature explosion in the combustion chamber counteracts the natural piston movement. This can lead to engine knocking and thus to serious, irreparable engine damage.
Give your customers what they need:°Our specially designed motor oils from the Special Tec AA range and the Special Tec DX1 have been developed to prevent LSPI. As of the API SN Plus+RC specification, these are subjected to an additional LSPI test.
The Special Tec AA motor oils are most suitable for modern Asian and American gasoline engines. They are particularly suited to long oil change intervals and high engine demands.
- Reduction of low speed pre ignition (LSPI)
- Extends the service life of the engine
- Outstanding engine cleanliness
- Optimum wear protection
- Saves fuel and reduces pollutant emissions
- Optimum aging stability
Special Tec AA 0W-20
Our additive for preventing LSPI engine damage
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 the fuel consumption. The deposits can begin to glow due to the high temperatures, which can then lead to engine knocking.
Deposits on injectors, pistons and combustion chamber are considered an essential factor for LSPI.
