Second, it boils at a relatively low 212F, so the risk of overheating would be high. First, it freezes at +32F, which would be a problem in many areas of the country. Water is a great heat transfer fluid, but has some significant shortcomings. That heat needs to be removed from the engine and transferred to the surrounding air through the radiator. FINAL CHARGE Coolant/Antifreeze is formulated with a patented nitrite-free formula.Īn antifreeze/coolant (“coolant”) provides 3 critical functions in a cooling system: 1) Maintain optimum operating temperature, 2) prevent freeze-up, and 3) protect cooling system metals from corrosion.Īn engine creates heat in the process of generating power to move the vehicle. As a result, extended life corrosion and cavitation protection is achieved without a regular schedule of liquid additives inhibitor testing and maintenance coolant filters. With OAT coolants, conventional inhibitors, like nitrites, are replaced with organic corrosion inhibitors that deplete very slowly over time.
To extend coolant service life and reduce maintenance time and cost associated with testing and maintaining inhibitor levels, the heavy-duty industry is moving toward nitrite-free Organic Acid Technology (OAT) coolants. Also, ongoing testing and monitoring of nitrite levels are required to ensure the proper levels are maintained. However, nitrites in conventional and fully formulated coolants deplete, thereby reducing the level of protection provided. Nitrites have long been used in fully formulated coolants, or incorporated in Supplemental Coolant Additive (SCA) then mixed with conventional coolants, for their ability to protect wet sleeve liners against cavitation and corrosion. At the end of the day, it’s about coolant performance, not specific chemistry. With FINAL CHARGE GLOBAL Coolant/Antifreeze, nitrites, and other conventional inhibitors like phosphate and silicate, are replaced with longer lasting organic corrosion inhibitors to provide total cooling system protection. The reason FINAL CHARGE GLOBAL Coolant/Antifreeze does not meet the chemical requirements of TMC RP-329 is that FINAL CHARGE GLOBAL Coolant/Antifreeze’s proprietary corrosion inhibitor system does not contain nitrite. While FINAL CHARGE GLOBAL Coolant/Antifreeze definitely meets the performance requirements of TMC RP-329, it does not meet the chemical requirements of the specification. TMC RP-329, a long-standing heavy-duty coolant standard, is the specification for a conventional low silicate coolant that is precharged with a Supplemental Coolant Additive (SCA) containing nitrite or nitrite and molybdate.
As with ASTM, TMC has not set coolant specifications addressing extended life coolants. Instead, current ASTM specifications are more geared toward conventional coolants that have a limited service life, typically 3-year/36,000 mile. However, it should be noted that ASTM has not established a specification for extended life coolants. FINAL CHARGE GLOBAL Coolant/Antifreeze meets leading ASTM coolant specifications, including ASTM D-4985 and ASTM D-3306.
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