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Petromin Fleet Master Plus 20W-50 lubricates diesel and gasoline engines under heavy loads. With an API CI-4/SL rating, this multi-grade oil prevents sludge buildup in high-mileage commercial vehicles. High TBN retention neutralizes acidic combustion byproducts during long-haul operation.
Key Features
- TBN Retention: 10 mg KOH/g base number for acid neutralization. Prevents internal metal corrosion.
- Thermal Stability: 230°C flash point for high-temperature resistance under load. Prevents oil evaporation in road dust.
- Fleet Compatibility: API CI-4/SL dual-rating for mixed engine types. Supports diesel trucks and gasoline cars.
- Flow Maintenance: 125 viscosity index for consistent lubrication flow. Stops oil thickening in galleries.
Frequently Asked Questions
Is Petromin 20W-50 good for diesel engines?
Yes, it meets API CI-4 standards for heavy-duty diesel performance. This rating prevents piston deposits and manages soot in turbocharged engines.
Does this oil protect against high sulfur fuel?
Yes, the 10 mg KOH/g TBN specifically neutralizes combustion acids. This stops internal corrosion from low-quality fuel.
