The MultiTherm PSC® cleaning fluid is designed for use in general maintenance of larger heat transfer fluid systems. It can be used with the heat transfer fluid that is currently in the system or new flush oil. It is formulated to break down the sludge deposits and resin residue as a result of its detergency and is designed to stay in suspension for easy removal or filtration. It is non-corrosive, non-toxic and non-hazardous and has a high flash point. It can be formulated to be compatible with all MultiTherm® heat transfer fluids as well as most other fluids so that small residual amounts left in the equipment will not be a problem.