- 4min
#Car
What is LSPI, when does it occur and how can you prevent it? We explain everything you need to know about this issue.
What is LSPI?
The term “Low Speed Pre Ignition” (LSPI) refers to the pre-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.
In many cases, LSPI is noticeable in the form of minor explosions, which lead to jerking in the engine before major engine damage and damage such as a broken cylinder head gasket, worn piston rings or a defective connecting rod bearing shell.
How is LSPI created?
The problem of premature ignition at low engine speeds only exists in modern, high-compression engines with direct injection, which operate in the low engine speed range and under high load. The reason for this is the functional design of these engines, which are designed for maximum power output in such a way that combustion inside the engine must take place faster and hotter than with conventional engines. As a result, the fuel only evaporates for a short time, which causes the risk of droplet formation, which can lead to unclean or incomplete combustion due to afterglow.
Driving at low revs and a cold engine promotes this pre-ignition. However, using the wrong motor oil can also lead to LSPI.This is because engines with direct injection require low-viscosity oils. These enter the combustion chamber more easily to form the explosive mixture for the required faster and hotter combustion processes. Due to the short time window of an explosion, this process must work smoothly and without complications to prevent extraordinary explosions.
How to avoid LSPI
If possible, avoid driving at low revs when cold. In addition, you should use special motor oils that prevent pre-ignition. To prevent LSPI, our specially designed motor oils from theSpecial Tec AArange andthe Special Tec DX1have been developed. As of the API SN Plus+RC specification, these are subjected to an additional LSPI test.
Special Tec DX1 5W-30
- SKU:
- 20967 1 l ,
- 20968 4 l ,
- 20969 5 l ,
- 3767 20 l ,
- 20950 60 l ,
- 20951 205 l
The SpecialTec DX1is a high-tech low-friction motor oil based on synthetic technology. It optimizes fuel consumption, ensures excellent cold-starting characteristics, optimum wear protection and excellent engine cleanliness. The innovative additive technology minimizes LSPI and thus ensures a longer engine service life. In addition, it is ideally suited for long oil change intervals and high engine requirements.
It was developed specifically for the requirements of GM and Opel vehicles with gasoline engines. To some extent, other vehicle manufacturers such as Chrysler, Ford, Kia, Honda, Hyundai, Mazda, Nissan, Toyota etc., have called for a lubricant with these specifications for different types of vehicles.
- Outstanding engine cleanliness
- Excellent wear protection
- Ensures lower fuel consumption
- Tested for use with turbochargers and catalytic converters
- Reduction of Low Speed Pre-Ignition (LSPI) or Stochastic Pre-Ignition (SPI)
The Special Tec AA motor oilsare 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
Special Tec AA 0W-8
- SKU:
- 21767 1 l ,
- 21768 4 l ,
- 21769 5 l ,
- 21770 20 l ,
- 21771 60 l ,
- 21772 205 l
Special Tec AA 0W-16
- SKU:
- 21326 1 l ,
- 21327 4 l ,
- 21328 5 l ,
- 21324 20 l ,
- 21325 60 l ,
- 21589 205 l
- SKU:
- 21416 1 l ,
- 6738 1 l ,
- 21417 4 l ,
- 9705 4 l ,
- 6739 5 l ,
- 8071 20 l ,
- 8072 60 l ,
- 8067 205 l
Special Tec AA 5W-20
- SKU:
- 20792 1 l ,
- 7658 4 l ,
- 20793 5 l ,
- 3834 20 l ,
- 3835 60 l ,
- 7622 205 l
- SKU:
- 20693 1 l ,
- 7615 1 l ,
- 20694 4 l ,
- 7616 4 l ,
- 21108 5 l ,
- 7530 5 l ,
- 20819 5 l ,
- 7517 20 l ,
- 20955 60 l ,
- 7518 205 l
Special Tec AA 5W-40 Diesel
- SKU:
- 21330 1 l ,
- 21331 4 l ,
- 21332 5 l ,
- 21333 20 l ,
- 21334 60 l ,
- 20425 205 l
