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GC ULTRA SYNTHETIC 5W-40

Description
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GC ULTRA SYNTHETIC SAE 5W-40 API SP is a top-tier fully synthetic motor oil formulated to deliver maximum protection for high-output, turbocharged direct-injection (TGDI) engines operating under peak ambient temperatures in Saudi Arabia. Engineered to mitigate LSPI risk and protect timing chains against wear.

Application Category Recommended Service Life / Drain Interval
Turbocharged Passenger Cars & Performance SUVs 10,000 km – 12,000 km (Optimized for KSA severe service)
Downsized TGDI & Modern Fleets 300 – 350 Operating Hours (Continuous thermal loading defense)

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

  • LSPI Prevention Standard: Eliminates Low-Speed Pre-Ignition hazards in modern turbocharged direct-injection engines.
  • Timing Chain Defense: Controls chain stretch and wear to maintain precise engine timing.
  • Turbocharger Thermal Shield: Resists extreme turbo temperature oxidation and oil coking.
  • Shear Stability: Stays in grade under high shear stress to retain oil film thickness.

TYPICAL PHYSICAL & CHEMICAL PROPERTIES

Property Parameter Method Unit Typical Value
SAE Viscosity Grade SAE J300 – 5W-40
Kinematic Viscosity @ 100°C ASTM D445 cSt 14.60
Kinematic Viscosity @ 40°C ASTM D445 cSt 85.80
Viscosity Index (VI) ASTM D2270 – 177
Density @ 15°C ASTM D4052 g/cm³ 0.851
Flash Point (COC) ASTM D92 °C 232
Pour Point ASTM D97 °C -42
Total Base Number (TBN) ASTM D2896 mg KOH/g 8.4
Apparent Viscosity (CCS) @ -30°C ASTM D5293 mPa.s (cP) 5,300
Sulfated Ash Content ASTM D874 % wt 0.78
Evaporation Loss (NOACK) ASTM D5800 % wt 9.1

PERFORMANCE SPECIFICATIONS & STANDARDS

  • API Service Category: SP
  • SASO / GSO Standards Compliant (Saudi Standards, Metrology and Quality Organization)
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