Ester Fully Synthetic High-HTHS European Engine Oil
| Product Name | K8 EURO 5W-40 | SAE Grade | 5W-40 |
| Product Type | Ester Fully Synthetic Engine Oil | Performance Level | API SQ/SP, ACEA A3/B4 |
| Series Positioning | K8 – Euro & Turbo / High-Performance | Application | European Vehicles / Turbo & High-HTHS Protection |
Product Description
KATMOTO K8 EURO 5W-40 is an ester fully synthetic high-HTHS engine oil developed for German and European gasoline engines, turbocharged engines, high-performance engines and light-duty diesel applications requiring SAE 5W-40 and ACEA A3/B4 protection. The balanced full-SAPS formulation delivers strong high-temperature oil-film strength, excellent detergent performance, oxidation stability and responsive protection under highway, mountain road, heavy-load and all-season driving conditions.
Key Performance Features
| ACEA A3/B4 high-HTHS protection
strong oil film for European engines requiring HTHS ≥ 3.5 mPa·s. |
Turbocharged engine protection
supports high-temperature operation and reduces oxidation-related thickening. |
| Full-SAPS detergent reserve
provides strong cleanliness and acid-neutralizing performance for long-term use. |
Stable 5W-40 viscosity
balances cold-start flow with high-temperature shear stability. |
| High-load driving confidence
suitable for highway, mountain, hot-climate and spirited driving conditions. |
European OEM-oriented formula
designed for VW/Audi, BMW, Mercedes-Benz, Porsche and Renault-type A3/B4 applications. |
Applications & Performance Level
| Applications | German and European turbocharged gasoline engines, high-output engines, naturally aspirated engines, selected light-duty diesel engines, and vehicles requiring SAE 5W-40 ACEA A3/B4 high-HTHS oil. |
| Suitable For | API SQ/SP; ACEA A3/B4; BMW Longlife-01-type; MB 229.3 / 229.5-type; VW 502 00 / 505 00-type; Porsche A40-type; Renault RN0700 / RN0710-type applications where SAE 5W-40 A3/B4 is required. |
| Important Notice | Not intended for engines requiring ACEA C low-SAPS oils, DPF/GPF-specific oils, or official OEM approvals unless those requirements are specifically confirmed. |
| Property | Test Method | Target Typical Value |
| Appearance / Color | Visual | Clear amber liquid |
| SAE Viscosity Grade | SAE J300 | 5W-40 |
| Density @ 15°C | ASTM D4052 | 0.855 g/cm³ |
| Kinematic Viscosity @ 40°C | ASTM D445 | 82.0 mm²/s |
| Kinematic Viscosity @ 100°C | ASTM D445 | 13.8 mm²/s |
| Viscosity Index | ASTM D2270 | 174 |
| CCS Viscosity @ -30°C | ASTM D5293 | 5,950 mPa·s |
| MRV Viscosity @ -35°C | ASTM D4684 | 21,000 mPa·s |
| HTHS Viscosity @ 150°C | ASTM D4683 / D4741 | 3.75 mPa·s |
| Pour Point | ASTM D97 | -42°C |
| Flash Point, COC | ASTM D92 | 232°C |
| Noack Evaporation Loss | ASTM D5800 | 9.0 % mass |
| Total Base Number (TBN) | ASTM D2896 | 10.0 mg KOH/g |
| Sulfated Ash | ASTM D874 | 1.10 % mass |
| Phosphorus | ASTM D5185 | 0.090 % mass |
