Various names are used to describe this group of products: organic acid technology (OAT), silicate-free coolants, long-life or 'fill for life' and also type D-coolants.
An organic additive technology (OAT) coolant contains only organic corrosion inhibitors such as carboxylates and triazole.
The carboxylate acid inhibitors used in OAT coolants have very low depletion rates. A monomolecular layer of inhibitors is formed on the metal surface only at the anodic sites where the potential of corrosion exists. These virtually non-depleting corrosion inhibitors give OAT coolants an extended life which can in some instances often be for the lifetime of the engine or vehicle.
Contact your local Area Sales Manager for more information on our coolants and to check regional availability.