• Pro Oil
  • Super Oil
  • Super Racing

    • Pro Series Oil

      HKS' experience and expertise of high performance engine tuning enables develop this HKS Pro Oil series. HKS Pro Oil series are special that only limited shops has this oil.

      Premium Pro

      Best of the Pro Oil series! Newly developed "HIPER ESTER" blended oil.
      HKS thinkin that the engine oil is the part of the engine. Premium Pro oil is for professionals who can blend two viscosities of oil to obtain a specific viscosity by understanding of oil viscosity characteristics.


      • BASE OIL: 100% Synthetic Oil
      • AE:0W-20/20W-60

      HKS developed new base oil "HIPER ESTER" for general use by utilizing the knowledge of developing the ester based racing oil of HRM087. "HIPER ESTER" has incredible lubrication performance and low resistance addition to the stable viscosity and oil film that are characteristics of non polymer type oil. Extreme-pressure performance of this Pro Oil series works well especially for tuned engines.

      Premium Pro oil has 2 grades; 0W-20 and 20W-60. "Engine oil setting" can be done by mixing these 2 types to obtain a specific viscosity to match the tuning level and/or use conditions. (See the Oil Mixture Viscosity Table below.) Oil viscosity can be adjusted as tuners want to reduce friction loss or to maintain sealing action with oil when clearance between parts must be wider, oil viscosity can be adjusted.

      Oil Mixture Viscosity Table


      Racing Pro

      Low friction oil with viscosity characteristic optimized at high temperature for Pro users.


      • BASE OIL: 100% Synthetic Oil
      • SAE: 10W-50/0W-40/-5W-30

      • Basic characteristic is based on "Pro OIL".
      • Names of items were changed from previous TURBO, NA, RE to viscosity.
      • All viscosity grades can be used for rotary engine (Low ash content).
      • Ester of the new oil is upgraded to the new generation "HIPER ESTER".
      • Super low friction "-5W 30" is the best for the latest normal aspirated engines. It has quicker response than "0W 30" class oils.

    • Super Oil

      Engine Oil Developed Targeting Specific Engines.

      HKS Super Oil series were developed on the concept of "engine oil is one of the engine part". HKS' original "HIPER ESTER" can follow extreme boundary lubrication to any kind of engines on the metal absorbed molecular level. Each engine oil viscosity was determined specifically for the target engine for optimum engine performance. Super Oil is 100% specially blended synthetic oil.


      HR -4W31, 0W42

      Best of the Pro Oil series! Newly developed "HIPER ESTER" blended oil.
      The target engine for HKS Super Oil HR series is the most-advanced NA engines. Friction reduction can be experienced under various driving stages from daily driving to circuit driving. Oil viscosity resistance is reduced while maintaining the oil film to run the engine without any stress.
      Applications: -4W31 is recommended for Toyota's GR engines and Nissan's VQ NA engines. 0W42 is for Honda's sports VTEC engine such as F20C, F22C, and B18C and HKS GT Supercharger installed vehicles.

      Performance

      HKS Super Oil HR series is a replacement of "Premium Pro OIL" and "RACING Pro OIL." -4W31 is equivalent to API standard 0W30. Low viscosity at the regular use range from 40 to 100 can improve the engine response. Also, the engine condition at the high load range is highly maintained. 0W42 is multi-grade type. This type is recommended not only for NA engines but also GT Supercharger installed vehicles.


      EVO-X 3.5w37

      Super Oil EVO-X was developed on the concept of "engine oil is one of the engine parts." HKS' original "HIPER ESTER" can follow extreme boundary lubrication of any kind of engines on the metal absorbed molecular level. The optimized oil viscosity for the 4B11 engine enables the use of this oil under higher load. Airtightness and friction balance of this oil are maintained at high levels. Super Oil EVO-X is the best to use for the 4B11 engine on Lancer Evolution X, Galant Fortis Turbo, etc.
      Applications: Lancer Evolution


      4G63 5.5W 38

      4G63 engine is built with the highly reliable cast-iron engine block. The optimized oil viscosity for the 4G63 engine can bring out more of advantages of the long stroke design and the engine characteristics that created by the unique turbo system. Quick response at the moment of stepping on the accelerator can be experienced. Super Oil 4G63 is the best to use for the 4G63 engine.
      Applications: Lancer Evolution


      EJ 7.5W 42

      EJ engine is the big bore/short stroke horizontal opposed engine. This unique system requires reducing mechanical abrasion and equalizing oil lubrication to all area. The optimized oil viscosity for the EJ engine can support torque improvement as well as engine protection by the oil film retainment ability of HIPER ESTER's metal absorbed molecule. Super Oil EJ is the best to use for the EJ engine.
      Applications: Legacy, Impreza, Forester, etc


      13BT 10W 45

      100% synthetic oil can prevent carbon from adhering to inside the housing that usually occurs in a rotary engine. HIPER ESTER maintains the oil film retainment under high temperature and airtightness inside the housing without risk to the rotary engine apex seals. Super Oil 13BT is the best to use for the rotary turbo engine.
      Applications: RX-7


      JZ-G 10W 50

      JZ-G series are high rigidity and compact inline 6-cylinder engines. Achieving high performance controlling delicate but dynamic engine characteristics is the target to develop this oil. The optimized oil viscosity for the JZ-G engine overcame the high boundary lubrication and brought out high performance at high engine RPM and output.
      Applications: Supra, Soarer, Mark II, Chaser, etc


      RB 15W 55

      RB26 engine is the basic of inline 6-cylinder engines. This oil can improve the drivability at mid-range rpm and capability to control high temperature and shear property associated with explosive output increase at high-range rpm. Super Oil RB is the best to use for the RB26 engine to maximize the engine characteristics.
      Applications: Skyline GT-R, Skyline, etc

    • Super Racing

      for GASOLINE ENGINE

      HKS engine oils are developed with an idea of that oil is a tuning part to maximize performance of engine. The unique viscosity categorization will effect at molecular level on boundary lubrication. Optimized oil viscosity selection solves hydrodynamic lubrication. Airtightness and friction are highly balanced.
      Engine building specialist at HKS now offer 100% synthetic special blend oil.


      10W55

      Best to use for tuned engines, oil vehicles, and vehicles which operation oil temperature is constantly more than 100.
      Applicable for stock specified #w50 grade.
      Max. Oil Temp. 150
      100 SYNTHETIC. SM-CF equivalent


      10W45

      Best to use for vehicles, which specified oil is W40.
      Applicable for stock specified #w40 grade.
      Max. Oil Temp. 140.
      100 SYNTHETIC. SM-CF equivalent


      10W35

      Best to use for vehicles, which specified oil is W30.
      Applicable for stock specified #w30 grade.
      Max. Oil Temp. 130.
      100 SYNTHETIC. SM-CF equivalent


      10W25

      Best to use for vehicles, which specified oil is W30.
      Applicable for stock specified #w20 grade.
      Max. Oil Temp. 120.
      100 SYNTHETIC. SM-CF equivalent

      for DIESEL ENGINE

      HKS engine oils are developed with an idea of that oil is a tuning part to maximize the engine performance. The unique viscosity categorization effects at molecular level on boundary lubrication. Optimized oil viscosity selection solves hydrodynamic lubrication. Airtightness and friction are highly balanced. HKS as an engine building specialist offers 100% synthetic special blend diesel oil.


      10W33

      100% synthetic blend oil can maintain the stable property of heat resistance and abrasion resistance not only for stock diesel engines but also for tuned diesel engines. Inhouse tests of this Super Racing Diesel Oil were conducted both in Japan and overseas where the major market of the diesel engine vehicles.
      This Super Racing Diesel Oil is effective for the existing diesel engines such as Toyota 1KD/2KD, Nissan M9R, etc.


      10W44

      100% synthetic blend oil can maintain the stable property of heat resistance and abrasion resistance not only for stock diesel engines but also for tuned diesel engines. Inhouse tests of this Super Racing Diesel Oil were conducted both in Japan and overseas where the major market of the diesel engine vehicles.
      *10W44 is upgraded type of 10W33 of viscosity in high temperature.