HKS 52001-AK142 Super Oil Premium 10W-40 Full Synthetic Engine Oil API SP 4L

Vehicle Fitment

• Universal - suitable for all gasoline-powered vehicles requiring a 10W-40 full synthetic engine oil meeting API SP standards
• Compatible with turbocharged and naturally aspirated petrol engines, including modern downsizing turbo engines requiring LSPI-compatible oil
• Suitable for both Japanese domestic market (JDM) and international specification petrol engines requiring a 10W-40 viscosity oil

Fitment Notes

• Verify your vehicle's recommended oil viscosity and specification requirements against your owner's manual before use.
• API SP is the current highest-performance API service category for gasoline engines as of the SP introduction date - compatible with all vehicles previously requiring API SN, SM, SL, or earlier standards.
• 10W-40 is a higher-viscosity grade suited to higher-mileage engines, engines operating in warmer climates, or modified/tuned engines where a more robust oil film is desired over lower-viscosity grades such as 5W-30 or 5W-40.
• LSPI (Low Speed Pre-Ignition) compatible - suitable for modern direct-injection turbocharged petrol engines where LSPI is a known concern.
• Available in 4L, 1L, and 20L variants - confirm the required volume before ordering. This listing is for the 4L bottle.

Features

• 100% fully synthetic base oil - formulated using premium synthetic base stocks and a performance additive package for superior protection over conventional and semi-synthetic oils.
• 10W-40 viscosity - the 10W cold-start grade ensures rapid oil circulation at low ambient temperatures, while the 40-weight hot viscosity provides a robust, stable oil film under high operating temperatures and engine loads.
• API SP certified - meets or exceeds the American Petroleum Institute's current highest-performance passenger car motor oil standard, including requirements for engine cleanliness, wear protection, oxidation resistance, and deposit control.
• LSPI (Low Speed Pre-Ignition) compatible - the additive formulation includes protection against LSPI, a combustion abnormality common in modern downsized direct-injection turbocharged engines that can cause serious internal engine damage if not addressed by the engine oil.
• 100% synthetic oil formulation with viscosity settings optimised to match the requirements of the 10W-40 grade for high-temperature stability and consistent oil film retention at elevated RPM and temperatures.
• Part of HKS's Super Oil Premium range - the evolved successor to the original HKS Super Oil series, reformulated with modern additive technology for contemporary engine requirements.
• High-temperature oil film retention - maintains protective viscosity under sustained high-load driving conditions from street use through to performance and track applications.

Specifications

• Part Number: 52001-AK142
• Product Name: HKS Super Oil Premium
• Viscosity: 10W-40
• Type: 100% Full Synthetic
• Volume: 4 Litres
• API Rating: SP
• LSPI Compatible: Yes
• Application: Universal - gasoline/petrol engines
• UPC: 4957266456064

Included Components

• 1x 4-litre bottle of HKS Super Oil Premium 10W-40

Product Description

The HKS 52001-AK142 is a 4-litre bottle of HKS Super Oil Premium in 10W-40 viscosity - a 100% fully synthetic engine oil formulated to API SP standard with LSPI compatibility. As the current highest-tier API performance classification for gasoline engines, SP supersedes the previous SN standard and adds enhanced requirements for engine cleanliness, low-speed pre-ignition protection, and improved compatibility with modern fuel-saving technologies. The LSPI-compatible additive formulation makes this oil suitable for modern direct-injection turbocharged petrol engines where conventional oils can contribute to low-speed pre-ignition events that may cause significant internal engine damage.

The 10W-40 viscosity grade provides a balance between cold-start fluidity and high-temperature film strength that suits a wide range of applications - from higher-mileage naturally aspirated engines where the slightly heavier weight over a 5W-30 or 5W-40 provides additional protection, to modified or tuned engines operating under elevated thermal and mechanical loads. As part of HKS's Super Oil Premium range, the -AK142 represents an updated formulation over the legacy Super Oil series, incorporating the additive chemistry required for contemporary engine architectures. Also available in 1L and 20L volumes - confirm the required size before ordering.