COOLING SYSTEM COOLING SYSTEM What to Check in an ELC-filled Cooling System ELC Concentration Cooling system maintenance The engine cooling system has very specific maintenance and inspection requirements. Failure to follow re- quirements can damage the engine. Engine damage can include but is not limited to: CAUTION Check the level of freeze/boilover protection, which is determined by the ELC concentration. Use a glycol refractometer to determine glycol level. Add ELC to obtain the ELC to water ratio required to provide the protection you need. Use the chart below to help determine how much ELC you need to add. Your engine’s cooling system is standard with Extended Life Coolant (ELC).
ELC consists of a mixture of ethylene glycol, water, and organic acid technology chemical inhibitors. ELC prevents corrosion and scale formation as well as provides freezing and boiling point protection. Freezing Boiling Corrosion Pitted cylinder liners NOTE 5 This information is found in the en- gine manufacturer's owner’s man- ual. It is the owner’s responsibil- ity to follow all requirements listed in the engine manufacturer's owner’s manual. Maximum recommended ELC con- centration is 60% ELC and 40% wa- ter by volume (a 60/40 coolant mix- ture). The minimum recommended concentration is 40%.
In an ELC-filled cooling system, the freeze point should be maintained between -30° F and -45° F (-34° C and -43° C). 5-82 Y53-6077-1B1 (03/17)