LSPI effect: how to prevent engine damage?

What is LSPI and why is it dangerous?

Low-speed pre-ignition (LSPI) is a dangerous phenomenon in which the fuel-air mixture spontaneously ignites during compression at low engine speeds and high loads.

Main risks:

• Abrupt rise of pressure in cylinders
• Destruction of pistons and piston rings
• Damage to connecting rods and bearings
• Complete engine failure

Engines at risk

Modern engines with downsizing technology are most susceptible to the LSPI effect:

Characteristics of engines at risk:

• Turbocharged petrol engines
• Direct fuel injection (GDI/TFSI/TSI)
• Small displacement (1.0-1.8 litres)
• High specific power
• Use of low-viscosity oils 0W-20, 5W-30

Causes of LSPI

Experts identify two main mechanisms:

Theories of origin:

• Deposits build up — hot carbon deposits on the pistons become ignition sources
• Oil theory – oil microparticles penetrate the combustion chamber and spontaneously ignite

Important: The composition of engine oil and additive package is critically important — some components can provoke LSPI, whereas modern formulas are specifically designed to prevent it.

Specifications ensuring protection

For reliable protection against LSPI, choose oils with modern tolerances:

International standards:

• API SP, API SN Plus
• ILSAC GF-6A, GF-6B

European specifications:

• ACEA A7/B7, C6

Tolerances:

• GM Dexos 1 Gen 2, Gen 3

AREOL solutions with LSPI protection

ECO ENERGY SERIES

AREOL Eco Energy C5/C6 0W-20

• Tolerances: ACEA: C5, C6; API: SP RESOURCE CONSERVING, API: SQ RESOURCE CONSERVING; ILSAC: GF-6A; ILSAC: GF-7A; BMW: LL-14 FE+; BMW: LL-17 FE+; Ford WSS-M2C947-B1; Ford WSS-M2C952-A1; Ford WSS-M2C954-A1; Ford WSS-M2C962-A1; Jaguar Land Rover STJLR.03.5006; MB: 229.71; MB: 229.72; OPEL/VAUXHALL: OV0401547-A20; Chrysler MS-12145; Fiat 9.55535-GSX; VOLVO VCC RBS0-2AE

Features: High shear stability, reduced fuel consumption, wear protection

AREOL Eco Energy VGL 0W-20

• Tolerances: ACEA: C5, API: SP, FIAT: 9.55535-DSX, VOLVO: VCC RBS0-2AE
• Features: Quick cold start, reliable lubricating film, high fuel economy

AREOL Eco Energy V 0W-30

• Tolerances: ACEA: A5/B5, ACEA: A7/B7, API: SL, RENAULT: RN 0700, VOLVO: VCC 95200377
• Features: Optimal lubricating properties, extended engine service life

AREOL Eco Energy DX1 5W-30

• Tolerances и specifications: API SP Resource Conserving, SQ Resource Conserving; ILSAC GF-6A, ILSAC: GF-6A, ILSAC GF-7A, GM: DEXOS 1 (TM) GEN 3, CHRYSLER: MS6395, FORD: WSS-M2C946-A, FORD: WSS-M2C946-B1, FORD: WSS-M2C961-A1
• Features: Targeted LSPI protection, easy cold start

AREOL Eco Energy DX1 0W-20

• Tolerances: API: SN Plus, API: SP/RC, API: SN/RC, API: SP, API: SQ Resource Conserving, ILSAC: GF-5, ILSAC: GF-6A, ILSAC GF-7A, GM: DEXOS 1 (TM) GEN 3, CHRYSLER: MS6395, FIAT 9.55535-CR1, FIAT 9.55535-GSX, FORD: WSS-M2C930-A, FORD: WSS-M2C945-A, FORD: WSS-M2C946-A, FORD: WSS-M2C947-A, FORD: WSS-M2C962-A
• Features: Innovative additive technology against LSPI

ECO PROTECT SERIES

AREOL Eco Protect Z 5W-30

• Tolerances: ACEA: C2/C3, API: SN/CF, API: SN Plus, BMW: LONGLIFE-04, VW: 502 00, VW: 505 00, VW: 505 01, Opel: OV0401547, GM: DEXOS 2, MB: 229.51, MB: 229.52, RENAULT: RN17 Level
• Features: Protection of particulate filters and catalytic converters

AREOL Eco Protect 5W-30

• Official tolerances: BMW Longlife-04, MB: 229.51, VW 504.00/507.00
• Tolerances и specifications: ACEA: C3, API: SP, MB: 229.31/229.52, Porsche: C30, Opel: OV0401547-D30/G30
• Features: Reduced content of harmful elements

To sum up

LSPI is a real threat to modern engines, but it can be effectively prevented by using the right motor oil.

Key recommendations:

• Choose oils with the following tolerances: API SP, API SN Plus, ACEA A7/B7 and C6, ILSAC GF-6A and GF-6B, GM dexos1 Gen 3
• Pay attention to the availability of special corporate approvals
• Use products specifically designed for turbocharged direct injection engines

AREOL oils with modern additive packages provide proven protection against LSPI and extend the service life of your engine.

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Choose the right oil — protect your car!

Find the full range of AREOL oils in our catalogue.