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With an API CI-4/SL formulation, Petromin Fleet Master Plus SAE 15W-40 15L lubricates heavy-duty diesel engines. High TBN retention prevents acid buildup during long operation cycles. This updated version replaces the CH-4 standard with CI-4 chemistry and increases the drain interval from standard to extended.
Key Features
- Extended Drain Intervals: High chemical stability maintains lubricant integrity over long distances. Commercial trucks stay on the road longer.
- High TBN Retention: 1.3% sulfated ash content neutralizes corrosive combustion acids. Engine internals resist chemical pitting.
- Thermal Oxidation Control: 230°C flash point prevents fluid thickening under extreme engine heat. Oil remains fluid and avoids sludge.
- Stable Viscosity Index: 135 index rating holds a 15.5 cSt film at 100°C. Moving parts stay separated during road dust.
Frequently Asked Questions
Is Petromin 15W-40 good for diesel engines?
This lubricant meets API CI-4 specifications for high-speed four-stroke diesel engines. It manages the high soot levels found in turbocharged heavy-duty machinery.
What is the drain interval for Petromin Fleet Master Plus?
The additive package supports extended drain intervals compared to previous CH-4 lubricants. Operating conditions and fuel sulfur content determine the final mileage.
