Transcription of GUIDE TO COOLANT ANALYSIS AND COOLING SYSTEM …
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GUIDE TO COOLANT ANALYSIS AND COOLING SYSTEM …
GUIDE TO COOLANT ANALYSIS AND COOLING SYSTEM MAINTENANCE. COOLANT FORMULATIONS & RECOMMENDED TEST PACKAGES. Conventional COOLANT Extended Life COOLANT Extended Life COOLANT Automotive, Light Duty & Heavy Duty engines (1st Generation) (2nd Generation). Ethylene glycol, propylene glycol or glycerin base (OAT, NOAT & HOAT) (NAP-Free or NAPS-Free & P-OAT). Inorganic inhibitor package for metal corrosion and cavitation pitting protection Organic Acid Technology (OAT) North American & European Formulated Coolants Typical color: Orange Typical color: Red Components Automotive and Light Duty Heavy- and light-duty diesel, natural gas, and Typical Color: Green/Yellow, Pink, Blue, Purple Controls corrosion gasoline engines Ethylene/Propylene Glycol or Glycerin based Nitrite, Amine, Phosphate Free Freeze point suppression Nitrite Organic Acid Technology (NOAT) Combination of organic acids as inhibitor package Boil point elevation Typical color: Red/O
other metals in the system • Electrolysis pitting through liners • Corrosive attack on engine block • Possible corrosion protection chemicals precipitate out of solution • Coolant mixing of different formulations • Severe aluminum corrosion; aluminum is an alkaline metal • Overtreating the system with SCAs
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