COOLANT ANALYSIS AND INTERPRETATION

SOS Coolant Analysis More than 50% of all engine failures can be attributed to coolant or cooling system problems. Unless corrected, cooling system problems will also reduce the life of transmission and hydraulic components served by coolant heat exchangers. S•O•S Coolant Analysis is a two-level program that determines the overall condition of your cooling system and identifies any problems with maintenance procedures and operational practices.

Level 1 Coolant Analysis provides the following analyses:

Glycol - Glycol values are reported in percent. depending on the brand of antifreeze used, it is either ethylene or propylene glycol. The recommended level for the southeast area is 50%. This means the coolant is half glycol (ethylene or propylene) and half quality water.
Nitrite - The measure of remaining corrosion inhibitor in your coolant system is determined by the nitrite level, and is reported in part-per-million (ppm). Most antifreeze come premixed with an inhibitor package. As the coolant ages, certain inhibitors are used up and must be periodically replenished.
pH - The pH indicates the acidity of the coolant. As coolant the coolant oxidizes, acids can form that will lower the pH. Combustion gases entering the cooling system will also cause the pH to drop. If the pH is too low, corrosion of iron and solder will increase. If the pH is too high, corrosion of copper and aluminum will increase. pH is unitless measurement. The recommended pH is 8.0 - 9.5 for ELC and 9.0 - 10.5 for DEAC.

Conductivity - Conductivity is the measure of the coolant's ability to conduct electricity, and is proportional the amount of dissolved solids in the coolant. As the coolant ages and more inhibitor is added to replenish lost corrosion protect, solids build-up and the coolant eventually becomes saturated. At this point solids can start to build up on the walls of the cooling system adversely impacting on the systems heat transfer capability.

For more information concerning Gregory Poole Equipment Company's
S•O•S Fluid Analysis Program, call (800) 451-7278