API-CI4 Diesel Engine Oil

Performance Standard: 

  • API CI-4 / SL, CF, CF4 CH-4 CG-4
  • ACEA E7, E5, E3
  • Global DHD-1
  • CAT EFC-1 / EFC-2

Meets standard equipment requirement

  • MB 228.3
  • Volvo VDS-3
  • MAN M3275-1
  • Deutz DQC III
  • Cummins CES 20078/7/6/5/2
  • Caterpillar ECF-1-A
  • MTU Category 2
  • Renault Truck
  • Allison C-4


  • Excellent wear protection under high operating stressful conditions.
  • Protection from corrosion even when used with diesel fuels with high sulphur content.
  • Sludge and deposits are prevented by under extraordinarily high thermal loads as well as in stop and go driving conditions.
  • Suitable for modern low emissions fitted with exhaust diesel particulate filters.
  • Demonstrated protection and performance in latest high power heavy duty diesel engine from European, Chinese, Korean & Japanese manufacturers in both on-highway and off-highway applications.


Byco Intelu Supreme 15W-40 is a significantly high performance diesel engine oil for use in:

  • Heavy-duty commercial vehicles with EURO II/EURO III engines operating on long hauls.
  • Passenger cars, trucks & trailers.
  • Bus and dumper operation.
  • Construction and mining equipments.

Key Properties

Properties / Units Values Test Method
SAE Viscosity Grade 15W-40 -
Kinematic Viscosity @100°C mm²/s 15.5 ASTM D-445
Kinematic Viscosity @40°C mm²/s 115.7 ASTM D-445
Viscosity Index 140 ASTM D-2270
Density @15°C 0.885 ASTM D-4052
Flash Point (COC)°C 233 ASTM D-92
Pour Point°C - 30 ASTM D-97
Sulphated Ash %wt 1.55 ASTM D-874
Base Number mg KOH/g 10 ASTM D-2896

Note: The typical characteristics are given as a guide only and may vary according to latest production according to ISO.