KOOL-GUARD PSi-OAT is a high-performance, MEG-based engine coolant which employs Organic Acid Inhibitor Technology to guarantee optimised performance and provide supreme protection from corrosion to high-power engines and their metals, therefore giving an exceptional long-life performance. This is due to its premium formulation containing thermal stable additives, ensuring protection under the highest thermal loadings of modern engines. Using Volvo VCS-2 antifreeze in conjunction with the latest TRUCK-GUARD high efficiency, low viscosity commercial engine lubricant will ensure that the vehicle will perform optimally under all conditions ensuring maximum performance, reliability and efficiency for fleet managers.

Unlike traditional coolants, it has excellent hard water stability and very low inhibitor depletion rates. It is compatible with most other ethylene glycol-based coolants but for optimum performance and durability, it is recommended that prior to using KOOL-GUARD PSi-OAT in systems previously filled with traditional coolant, the cooling system is drained and flushed with clean water before filling with KOOL-GUARD PSi-OAT, diluted in accordance with the vehicle manufacturers instructions. We recommend a 50% dilution with good-quality water. Diluted at this level it is effective at temperatures down to -38°C.

It is available as both a concentrate and pre-mix and is available in 1000L IBC, 200L DRUM and 20L.