Technical Deep Dive: Furo PROFI 15W-40 — Built for Heavy Duty, Built to Last | Furo

Technical Deep Dive: Furo PROFI 15W-40 — Built for Heavy Duty, Built to Last

Why Mineral Base Oil Still Matters for Heavy-Duty Equipment

In an era dominated by synthetic lubricants, mineral-based oils continue to lead the way in the heavy-duty diesel segment. This isn’t just tradition — it’s sound engineering.

Furo PROFI’s highly refined mineral base delivers natural lubricity, viscosity stability, and excellent compatibility with legacy engine seals. Combined with a robust additive package featuring anti-wear, detergent, and antioxidant components, it provides reliable protection even under extreme dust exposure, continuous heavy loads, and extended drain intervals.

Owner’s Bottom Line

  • Reduced downtime risk thanks to stable lubrication properties
  • Protection against varnish deposits and abrasive wear
  • Versatility: one solution for mixed diesel fleet operations
  • Outstanding value for money in intensive applications

Furo PROFI 15W-40 is engineered for conditions where performance matters most:

  • Stable oil film under high loads and temperatures
  • Compatibility with previous generation engine seal materials
  • Reliable performance across wide temperature range without excessive consumption
  • Optimal price-to-performance ratio for demanding applications

Key Specifications

  • SAE 15W-40 Viscosity: Perfect balance between cold start capability (down to -20°C) and oil film retention at high operating temperatures
  • API CI-4/SL Quality Level: Enhanced protection for EGR-equipped engines, resistance to soot-related wear and thermal degradation
  • Approvals: MB 228.1, MAN 271, Volvo VDS, OJSC KAMAZ — meeting leading manufacturers’ requirements

Technical Specifications

  • Kinematic Viscosity at 100°C: 15.25 mm²/s
  • Viscosity Index: 170
  • Density at 20°C: 856.0 kg/m³
  • Flash Point: 229°C
  • Pour Point: -28°C
  • Total Base Number (TBN): 9.4 mgKOH/g

Expert Analysis

  • Viscosity Index (170): Exceptionally high for a mineral oil, ensuring consistent protection across all operating temperatures
  • Total Base Number (9.4 mgKOH/g): Effectively neutralizes acids, protecting the engine from corrosion even when using high-sulfur fuels
  • Flash Point (229°C): Indicates low oil consumption and minimal top-up requirements
  • Pour Point (-28°C): Ensures reliable cold starts in challenging winter conditions

Why Choose Furo PROFI 15W-40?

This oil forms a durable lubricating film that withstands tremendous loads while preventing deposit and soot formation — keeping your engine clean inside and out. Thanks to its balanced formulation and verified OEM approvals, Furo PROFI 15W-40 delivers what heavy equipment owners value most: minimized failure risks and maximized engine rebuild intervals.

Application Guidelines

Designed for naturally aspirated and turbocharged diesel engines in trucks, dump trucks, excavators, and specialized construction equipment. Recommended drain interval: 15,000–20,000 km or 250–400 operating hours. Not suitable for engines equipped with Diesel Particulate Filters (DPF) requiring Low SAPS oils.

Furo PROFI 15W-40 — the technically sound choice for those who value equipment reliability and operational efficiency.

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