GC ULTRA SYNTHETIC 10W-40

GC ULTRA SYNTHETIC SAE 10W-40 API SP represents the peak of engine lubrication technology, specifically formulated to combat Low-Speed Pre-Ignition (LSPI) in modern turbocharged direct-injection (TGDI) engines operating under extreme Middle Eastern thermal loads. Delivers outstanding protection against timing chain stretch, sludge, and high-temperature oxidation.

Application Category Recommended Service Life / Drain Interval
Turbo Gasoline Direct Injection (TGDI) Vehicles 10,000 km – 12,000 km (Optimized for KSA high-speed highway conditions)
Hybrid Powertrains & Downsized Engines 300 – 350 Operating Hours (Sustained thermal resistance under desert climate)

Note: Actual drain intervals may vary depending on vehicle condition, fuel sulfur levels, severe dust exposure, and OEM engine recommendations.

  • LSPI Mitigation: Advanced chemistry prevents catastrophic Low-Speed Pre-Ignition events in modern downsized TGDI engines.
  • Timing Chain Protection: Shields timing chains against wear and stretch across extended oil service intervals.
  • Extreme Thermal Stability: Resists severe thermal breakdown during peak desert summers exceeding 50°C surface temps.
  • Sludge & Varnish Defense: Keeps turbochargers and oil passages free of restrictive carbon deposits.

TYPICAL PHYSICAL & CHEMICAL PROPERTIES

Property Parameter Method Unit Typical Value
SAE Viscosity Grade SAE J300 10W-40
Kinematic Viscosity @ 100°C ASTM D445 cSt 14.70
Kinematic Viscosity @ 40°C ASTM D445 cSt 95.80
Viscosity Index (VI) ASTM D2270 160
Density @ 15°C ASTM D4052 g/cm³ 0.860
Flash Point (COC) ASTM D92 °C 230
Pour Point ASTM D97 °C -38
Total Base Number (TBN) ASTM D2896 mg KOH/g 8.5
Apparent Viscosity (CCS) @ -30°C ASTM D5293 mPa.s (cP) 5,500
Sulfated Ash Content ASTM D874 % wt 0.78
Evaporation Loss (NOACK) ASTM D5800 % wt 9.2


PERFORMANCE SPECIFICATIONS & STANDARDS

  • API Service Category: SP / ILSAC GF-6A Equivalent
  • SASO / GSO Standards Compliant (Saudi Standards, Metrology and Quality Organization)
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