SCA Number

Definition

SCA Number (Supplement Coolant Additive) represents the level of coolant additive required for adequate liner pitting protection in a diesel engine conventional coolant. SCA can be in the complete coolant formulation, a liquid inhibitor package or a pre-charged coolant filter. SCA Number is calculated from molybdate and nitrite concentrations.

Standard Test Method Used

POLARIS Method

Reporting Measurement

Calculation