Fenix Superior SAE 15W-40 is a high-quality mineral engine oil belonging to the SHPD class (Super High Performance Diesel), formulated for the lubrication of high-power diesel engines in the most demanding commercial, agricultural, and industrial applications. This oil is designed for modern commercial vehicles, agricultural and construction machinery, and stationary power units, including highly turbocharged engines and those equipped with intercoolers.

The SHPD classification indicates that Fenix Superior meets the elevated performance standards required by modern high-output diesel engines operating under severe conditions. Whether in long-haul trucking, heavy construction, intensive agriculture, or continuous-duty stationary power generation, this oil delivers consistent, reliable engine protection throughout demanding service intervals.

Fenix Superior 15W-40 is particularly recommended for use in mixed vehicle fleets, where its broad compatibility across different engine types and manufacturers simplifies lubricant inventory management. A single product can serve diverse diesel engines across the fleet, from highway trucks to construction excavators to agricultural tractors.

The advanced additive package provides effective protection against wear and maintains maximum engine cleanliness through superior detergent and dispersant chemistry. This keeps pistons, rings, and oil passages free from sludge, varnish, and carbon deposits that reduce engine efficiency and accelerate component wear. Additional benefits include strong oxidation resistance, reliable corrosion protection, and effective soot handling. The 15W-40 viscosity grade offers dependable all-season performance, providing adequate cold-start protection while maintaining robust film strength at operating temperature. Fenix Superior is a proven, cost-effective mineral oil for heavy-duty diesel applications.