PETROBIG ULTIMACO SYNT 10W40 is a high-performance oil that ensures excellent lubrication for modern diesel engines, promoting their longevity. It delivers excellent performance in both modern, low-emission engines and older engines running on diesel with high or low sulfur content.
PETROBIG ULTIMACO SYNT 10W40 is formulated from high-quality base oils and a carefully selected blend of additives, enabling it to maintain stable viscosity despite soot formation and high temperatures. It also exhibits remarkable antioxidant and anticorrosive properties, preventing the formation of deposits at high temperatures.

Level of performance.

API CI-4 CF/SL / ACEA E7 – A3/B4 / MB 228.3 / MAN 3275 /
VOLVO VDS-3 / Renault RLD-2 / Caterpillar ECF-1a / Mack EO-M+ / Deutz DCQ-III / MT.


  • High thermal and oxidation stability
  • High alkalinity reserve
  • Shear stability
  • Excellent low-temperature properties
  • Reduction of sludge, deposits, and viscosity increase
  • Wear protection and viscosity control


  • All naturally aspirated and turbocharged diesel engines
  • All engines for long-distance trucks and buses
  • Engines for construction equipment, agriculture, etc.
  • Mixed fleets (gasoline and diesel).


ColorASTM D1500
Density at 15°CASTM D4052g/ml
Viscosity at 40°C in cStASTM D445mm2/s109.10
Viscosity at 100°C in cStASTM D445mm2/s14.79
Viscosity Index – VIASTM D2270135
Point of flowASTM D97°C-30
PMCC Flash PointASTM D93°CMin 200

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