REFERENCE ONLY IMPORTANT: Supplemental coolant additives MUST be added to the coolant solution. Ethylene glycol concentrate (antifreeze) DOES NOT contain chemical inhibitors needed to control liner pitting or erosion, rust, scale, and acidity. 140497 PN=28 A-Ouality Water 8-Ethylene Glycol Concentrate (Antifreeze) C-Supplemental Coolant Additives (SCA's) RG .1 8293. REQ1 AA·19·09AUG94 CD '" fll (!) a: Fuels, Lubricants, and Coolant "") - - + + Engine Coo/ant 20 To meet cooling system protection requirements, the coolant MUST consist of a 50/50 mixture of quality water and ethylene glycol concentrate (antifreeze). Add to the mixture 3% (by volume) supplemental coolant additives (SCA's).
See ENGINE COOLANT SPECIFICATIONS, later in this section, for further definition. Makeup of the coolant between changes MUST consist of the same requirements as during a complete change. Performing a COOLS CAN analysis is the recommended method for determining the amount of quality water, ethylene glycol concentrate, and supplemental coolant additives that should be added. ENGINE COOLANT REQUIREMENTS