Supplemental Coolant Additive (SCA)
The key chemical component in SCA cooling system treatment is Nitrite. Nitrite provides protection against cavitation, erosion, and also provides corrosion protection to aluminium and solder.
While the chemical composition of SCA+ Cooling System Treatment features some of the same chemicals, there are differences.
Molybdate and Nitrite are combined to provide cavitation erosion protection and inhibit corrosion.
Silicate reduces corrosion of ferrous metals and is an affective aluminium corrosion inhibitor. Phosphate functions as an alkaline buffer to prevent acidity and controls pH.
Donaldson SCAs combat a whole series of coolant system problems including, rust, scale from minerals, acidity from antifreeze, the intrusion of air fuel and oil to coolant, pitting of engine parts from cavitation, foaming from coolant aeration and silicate drop-out from over-concentration.