TRUEGARD R&O 150 5 GALLON PAIL

ISO VG 150 is a high-viscosity grade, meaning the oil is considerably thicker than common hydraulic grades such as ISO VG 32, 46, or 68. This makes it best suited for heavily loaded, slow-moving industrial systems - such as large gearboxes and industrial compressors - where strong oil film support is critical; it is not recommended for high-speed hydraulic circuits that specify a lighter-grade fluid.

R&O stands for Rust and Oxidation, indicating that the oil contains a specialized inhibitor package engineered to shield metal surfaces from corrosion and to reduce the formation of harmful deposits inside equipment. Without this additive package, standard mineral oils can oxidize and produce sludge or acids over time, accelerating wear and shortening component life.

Yes, the product is specifically recommended for hydraulic systems, gearboxes, and compressors. Its high-viscosity formula and excellent film strength make it capable of handling the high loads and elevated operating temperatures common across all three industrial system types.

Mineral-based oils like TRUEGARD R&O 150 are broadly compatible with seals and components designed for conventional petroleum lubricants, but they are generally not compatible with systems that require synthetic or vegetable-based fluids. If converting from a different oil type or brand, it is good practice to drain and flush the system first, as mixing different formulations can compromise additive effectiveness.

High-viscosity oils flow more slowly in cold conditions, which can make startup circulation sluggish in cold environments. ISO VG 150 is best suited for applications where ambient and operating temperatures remain in moderate-to-high ranges; if your equipment operates in cold climates or requires reliable cold-start flow, consult your equipment manufacturer for the appropriate viscosity grade.

The rust and oxidation inhibitor package reduces deposit and corrosion buildup inside equipment, which translates to less frequent cleaning intervals and lower risk of unplanned downtime. The high film strength also reduces wear on components operating under heavy loads, extending the service life of gearboxes, hydraulic systems, and compressors and lowering overall maintenance costs.