OAT Heavy-Duty Extended Life is a new generation, extended life antifreeze for use in both light and heavy duty service. It is formulated to provide superior corrosion protection and durability under the more demanding conditions of higher combustion temperatures and cylinder pressures of the latest low-emission engines. OAT Heavy-Duty Extended Life is specifically designed to protect the aluminum and magnesium alloys being used in today’s high-performance engines.  Additionally it protects all the traditional engine metals including steel, cast iron, copper, brass and solder. 

As an all-organic formulation, this coolant does not contain any conventional inorganic salts (free of nitrite, nitrate, silicate, phosphate and borate), amines or 2-ethylhexanoic acid. It employs advanced multi-functional organic acid technology that combines three types of corrosion protection in one molecule, and uses this in combination with other organic di-acids and azoles. This new type of additive/corrosion inhibitor system minimizes deposit formation, protects all types of metal, has high compatibility with non-metal components (plastics and elastomers), provides outstanding cylinder liner cavitation/pitting protection, and is compatible with all types of coolant technologies. The coolant’s performance is further enhanced with anti-scalant, anti-fouling, and water pump lubrication additives.

OAT Heavy-Duty Extended Life meets ASTM D6210, the specification for fully-formulated, heavy-duty applications without the use of SCA’s or extenders. It provides cooling system protection for 600,000 on-road miles, or longer. In off-road and stationary engines, it provides protection for 12,000 hours or 6 years, whichever comes first. Longer service life is possible with a strong coolant maintenance program. If required, a concentrated booster is available for restoring the inhibitor content when coolant loss has been made-up with water or to extend the coolant service life beyond the standard miles/hours. 

Product Bulletin / SDS

Product Bulletin (with Nitrite and Molybdate) / SDS (w/ Nitrite and Molybdate)


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