![]() ![]() There are a couple problems with inorganic corrosion inhibitors. ![]() They are slightly abrasive, and are slightly more likely than phosphates to cause leaks in water pump seals. Silicates (prestone green) are particularly good with aluminum, not as good with iron, and do fine with copper/brass/lead. Phosphates did well with iron, and okay with aluminum, and with copper/brass/lead radiators and heater cores. Both are inorganic chemistries, but they are incompatible with each other and with other coolant types. Japanese coolants used phosphates, the green stuff (Prestone) used (and still uses) silicates. Prior to the late eighties, all coolants supplied in factory pre-fills and available over the counter used conventional inorganic chemistry to inhibit corrosion. "All commonly-available antifreezes are based on ethylene glycol it's the corrosion inhibitor chemistry that is different and potentially incompatible. Here's some useful info from the Yotatech forum: I'd use either Toyota OEM Super Long Life coolant or Zerex Asian (red). This uses a chemistry that combines the best attributes of IAT and OAT coolants. Note: I believe I can use the first product, but please advice me before doing so.Ĭurrent Toyota coolant is HOAT type (Hybrid Organic Acid Technology). The 50% dilution of EN COOL OATĮxtra Long-life provides protection over wide operating temperature range for effective cooling in ![]() Phosphates, the coolant will contribute to a safer environment. Exempt from potentially harmful additives such as nitirites, amines and 2000 hours) for passenger cars or 32000 hours (or 5 years) for 8000 hours) in truck & busĪpplication, 250,000 km (ca. Have proven to provide protection for at least 650,000 kms (ca. DuringĮxtensive fleet testing, the synergistic combination of organic compounds present in this coolant, The corrosion inhibitors contained in EN-COOL OATĮxtra Long-life have very low depletion rates, unlike traditional silicate based technologies. This coolant technology provides longlife corrosion protection for all engine metals, includingĪluminium and ferrous alloys and is recommended for use in cooling systems of liquid cooledĪutomotive and industrial combustion engines. Technology of organic acid inhibitors (OAT) and meets the requirements of numerous Original Nitrites, amines and phosphates and as such contributes to a safer environment.ĮNOC EN-COOL OAT Extra Long-life is a premium long-life coolant that is based on advanced EN-COOL EXTRA is free from potentially harmful additives such as It is available diluted with de-ionised water at 33% and 50% concentrations of EN-ĬOOL EXTRA coolant. Systems of gasoline and diesel engines, especially the principle metals, iron, copper andĪluminium. It provides excellent corrosion protection for all metals in cooling Monoethylene glycol and organic acid carboxylate technology corrosion inhibitors with proven Should it always be pink or it can be any color? Green maybe? I am asking this since I have local brands that product car lubricants.ĮNOC EN-COOL EXTRA is a superior quality engine coolant formulated from high purity I would like to change the coolant in my car. ![]()
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