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Corrosion Inhibitors

An engine coolant must provide protection against corrosion and scale formation in the engine and radiator. Different engine metal surfaces require different inhibitor formulations to prevent corrosion at hot spots near heat-rejecting surfaces (eg around exhaust valves).

A common distinction between corrosion inhibitors is whether they are organic or inorganic. The following categories reflect the different kinds of corrosion inhibitors:

Conventional Coolants

Conventional coolants are formulated with mineral (inorganic) inhibitors using phosphate, silicate and nitrite chemistry, and can be used for protection against corrosion in aluminium and cast iron engines. Conventional coolants however have a relatively short service life when compared with other technologies, requiring regular monitoring and replenishment by way of Supplemental Coolant Additives (SCAs) to ensure satisfactory protection of an engine cooling system.

Hybrid Coolants

Hybrid OAT coolants take advantage of both inorganic and organic acid additive technologies to provide a cost effective coolant solution that is suitable for all industrial and automotive applications.

Organic Acid Technology Coolants (OAT)

Organic acid coolants use virtually non-depleting organic corrosion inhibitors to provide extended service products with superior protection to all components of the cooling system. The PrixMax OAT coolants are also readily biodegradable in their unused form and use environmentally sustainable formulations.