Differentiating Better Kind of Coolants, Tow Truck in Sydney

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Differentiating Better Kind of Coolants, Tow Truck in Sydney

Differentiating Better Kind of Coolants, Tow Truck in Sydney

Coolant is a bright yellow or green liquid that mixes with the water in cars, trucks and other vehicles to keep the radiator safe from freezing or overheating. The main purpose of coolant is transferring heat and prevent the engine from damage. All Sydney Tow Truck tells us some types of coolant. You can contact us at any time for services of your vehicle Service  in Concord, Enfield and Epping



The original, green-dyed coolants are called conventional low-silicate, but the technical name for this type of coolant and its inhibitor package is Inorganic Acid Technology. It was typical to start with a low silicate-based product design for cars and light-duty trucks, which required dilution with water, then you needed to “pre-charge” it with specific amounts of supplemental coolant additives to protect heavy duty engine cylinder liners from destructive pitting corrosion.

Today, most of the “conventional low-silicate” coolants in the market are fully formulated with a pre-charge of SCA to protect the cooling systems of heavy duty engines against corrosion, cavitation, liner pitting, and freezing and boil over.


Hybrid Organic Acid Technology (HOAT), which is a combination of some of the inhibitors used in inorganic IAT and organic OAT coolants, is typically based on a low-silicate, nitrite technology. Unlike the OAT and NOAT Extended Life Coolants (ELC), HOAT coolants, like the IAT coolants, typically require SCA added back into the system at the first maintenance interval or as specified by the engine manufacturer.

HOAT coolants are most commonly found dyed yellow or orange. These formulations are not compatible with the extended interval coolant formulation of either NOAT or OAT coolants and should not be mixed with them.


Extended Life Coolant does not require a supplement (referred to as an extender) until 300,000 miles or 6,000 engine hours to achieve the full 600,000 miles or 12,000 engine hours of service life.

The coolants use organic acids (organic additive technology), nitrite and/or molybdenum as part of their inhibitor package and are referred to as Nitrated Organic Acid Technology (NOAT) coolants.


Organic Acid Technology (OAT) has no nitrite added. These coolants typically provide 600,000 miles or 12,000 engine hours of service life, but their performance life can be drastically reduced if contaminated with nitrite-containing coolants.


Since both water and coolant are colorless, manufacturers add a colored dye to the solution so the user can differentiate between it and other under-hood fluids and more readily know if a heavy duty engine is experiencing a coolant leak.

The growth in the number of available coolant formulations has forced manufacturers to use different color dyes for different types of coolants.