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ENGINE OIL

HKS bestseller engine oil series "SUPER OIL" are refined with an additive made by the latest technology that fights against LSPI(Low Speed Pre-Ignition).

  • Effective against LSPI(Low Speed Pre-Ignition)
    HKS bestseller engine oil series "SUPER OIL" are redesigned by the latest technology; an additive was prescribed and added to the oil to protect the engine against the effects of LSPI (Low Speed Pre-Ignition) which tends to occur to a downsized turbocharged engine.
    Usually, LSPI occurs when low viscosity engine oil is used to a downsized turbocharged engine; however, even high viscosity engine oil is used, if the engine is a high compression and high boost tuned direct injection turbocharged engine, and it is run under severe combustion condition, LSPI may occur. New "HKS SUPER RACING" series are the unprecedented high viscosity engine oil that can protect the engine from LSPI.
  • Base Oil is 100% Synthetic Oil
    The base oil to maintain the oil basic performance is 100% Synthetic Oil. The best viscosity and ingredient is selected for each engine specification.

SUPER TURBO RACING 5w40
【SUPER TURBO RACING 5W40】

SUPER TURBO RACING 5w40

Widely Applicable with Turbo Engine/Downsized Turbo Engine

  • Stock Grade : *W40
  • Volume : 4L/1L

SUPER TURBO RACING 15w50
【SUPER TURBO RACING 15W50】

SUPER TURBO RACING 15w50

Ideal for Tuned Engine, Large Displacement, and Old Vehicle Models

  • Stock Grade : *W50
  • Volume : 200L / 20L / 4L / 1L

SUPER BOXER RACING 10w40
【SUPER BOXER RACING 10W40】

SUPER BOXER RACING 10w40

Ideal for Horizontally Opposed Engine like FA or EJ.

  • Stock Grade : *W40
  • Volume : 4L / 1L

SUPER ROTARY RACING 10w40
【SUPER ROTARY RACING 10W40】

SUPER ROTARY RACING 10w40

Designed for High Rotation Rotary Engine

  • Stock Grade : *W40

  • Volume :200L / 20L / 4L / 1L

*Additive effective for LSPI (Low Speed Pre-Ignition)is not contained.

SUPER OIL Premium 7.5w35
【SUPER NA RACING 0W40】

SUPER OIL Premium 7.5w35

Ideal for High Response NA Engine & Vehicle with GT Supercharger

  • Stock Grade : *W40
  • Volume : 20L / 4L / 1L
 

What is "LSPI"?

  • LSPI stands for Low Speed Pre-Ignition
  • For the tuned engine that requires fuel cooling and direct injection engine, gasoline adheres to the cylinder, and it dilutes the oil on the wall surface that makes smooth flow.
    The temperature of oil that is blown up by a high speed piston ring and/or air flow inside a cylinder increase by air mixture adiabatic compression caused by raising piston. When this oil temperature exceeds the ignition temperature, it causes pre-ignition. This is one of causes of LSPI.
    For a highly tuned engine, LSPI may occurs at intercept due to its ultra-high boost. LSPI may cause knocking that cannot be stopped even ignition timing is delayed.

What would happen when pre-ignition occurs?

  • Pre-ignition increases the combustion chamber pressure excessively.
    Excessive load is applied to the pistons and con'rods.
  • This graph shows the pressure doubled of the normal pressure.
    It may cause damage to the pistons and con'rods.
  • This graph shows that pre-ignition is causing knocking.
    Knocking causes damage to the pistons and plugs.
    Usually, pre-ignition causes strong knocking.

Oil Effective against LSPI

  • Making an oil effective against LSPI requires to devise blending of additives to prevent pre-ignition.
    Usually, Ca (calcium) is contained in an additive for oil cleaning, and when oil is degraded,
    Ca acts as a fire starter causing pre-ignition.
    HKS new oils contains newly developed a magnesium-containing additive instead of calcium as a detergent dispersant.

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