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SAE 15W-40 Heavy Duty
Fleet Grade

Heavy Duty Diesel Engine Oil

SAE 15W-40 Heavy Duty

Maximum wear defence for heavy commercial engines

API CI-45L

ProMEX SAE 15W-40 Heavy Duty is formulated for the most demanding diesel engine applications. Engineered to meet API CI-4 requirements, it provides maximum wear defence, outstanding soot dispersancy, and long-term durability under sustained heavy loads.

Key Features

  • ✓Maximum wear defence under heavy load and high stress
  • ✓Outstanding soot dispersancy for diesel engines
  • ✓Excellent corrosion protection for engine components
  • ✓High TBN retention for extended drain intervals
  • ✓Proven performance in turbocharged diesel engines
  • ✓Suitable for mixed-fleet and industrial applications

Technical Specifications

Viscosity GradeSAE 15W-40
API ServiceCI-4
Base StockSemi-Synthetic
Available Sizes5L
ApplicationHeavy Duty Diesel
OriginMade in USA

Recommended Applications

Designed for heavy-duty diesel engines in commercial trucks, buses, construction equipment, and industrial machinery operating under sustained high loads.

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