Ester Fully Synthetic High-Protection Engine Oil
| Product Name | K7 PROTECT 10W-40 | SAE Grade | 10W-40 |
| Product Type | Ester Fully Synthetic Engine Oil | Performance Level | API SP/SN |
| Series Positioning | K7 – Daily / Multi-Vehicle / Turbo | Application | Daily Gasoline / High-Temperature & High-Mileage |
Product Description
KATMOTO K7 PROTECT 10W-40 is an ester fully synthetic engine oil designed for mainstream gasoline vehicles, higher-mileage engines, warm climates and daily severe driving where SAE 10W-40 API SP/SN oil is recommended. Its balanced formula provides a robust oil film, good thermal stability, detergent performance and reliable protection for family cars, light commercial vehicles and engines requiring stronger viscosity protection.
Key Performance Features
| Strong 10W-40 oil film
supports older, higher-mileage and warm-climate gasoline engines. |
API SP/SN performance
helps protect against wear, oxidation and deposit formation. |
| Thermal stability
resists oil breakdown during hot-weather and traffic-congestion driving. |
Deposit control
keeps engines cleaner by helping reduce sludge and varnish. |
| Practical viscosity protection
suitable for vehicles needing thicker protection than 5W-30 or 10W-30. |
Multi-purpose application
daily family cars, taxis, light vans and mixed city/highway use. |
Applications & Performance Level
| Applications | Mainstream gasoline vehicles, higher-mileage engines, taxis, family cars, light vans and warm-climate applications requiring SAE 10W-40 API SP/SN oil. |
| Suitable For | API SP/SN and earlier API gasoline categories where SAE 10W-40 is specified. Suitable for engines needing stronger film protection and stable high-temperature viscosity. |
| Important Notice | Not recommended for modern engines requiring ultra-low-viscosity hybrid oils, DPF/GPF-specific low-SAPS oils, or OEM-specific approvals unless allowed by the vehicle manufacturer. |
| Property | Test Method | Target Typical Value |
| Appearance / Color | Visual | Clear amber liquid |
| SAE Viscosity Grade | SAE J300 | 10W-40 |
| Density @ 15°C | ASTM D4052 | 0.866 g/cm³ |
| Kinematic Viscosity @ 40°C | ASTM D445 | 94.0 mm²/s |
| Kinematic Viscosity @ 100°C | ASTM D445 | 14.5 mm²/s |
| Viscosity Index | ASTM D2270 | 158 |
| CCS Viscosity @ -25°C | ASTM D5293 | 6,200 mPa·s |
| MRV Viscosity @ -30°C | ASTM D4684 | 25,000 mPa·s |
| HTHS Viscosity @ 150°C | ASTM D4683 / D4741 | 3.85 mPa·s |
| Pour Point | ASTM D97 | -36°C |
| Flash Point, COC | ASTM D92 | 228°C |
| Noack Evaporation Loss | ASTM D5800 | 10.0 % mass |
| Total Base Number (TBN) | ASTM D2896 | 8.2 mg KOH/g |
| Sulfated Ash | ASTM D874 | 0.90 % mass |
| Phosphorus | ASTM D5185 | 0.080 % mass |
