NALCOOL 2000 is a widely used treatment. It protects against rust, galvanic corrosion and foaming. The anti foam inhibitor is a must. Engine vibration causes foam and bubbles, which leads to cavitation. Cavitation is nothing more than the bubbles in the water coming in contact with the metal in the engine and water pump and blowing up (imploding) causing pitting, which in time can eat a water pump up.
Cummins has a dry type chemical additive (DCA) for our engines. They will also sell you a kit to read the coolant like a chemist and decide how much more DCA to add.
Ethylene glycol based antifreeze has a boiling point of 223 deg, which is 11 deg higher than water. This means you don't have to worry much about ethylene glycol based antifreeze evaporating away. Ethylene glycol is good to go for any engine. It can be "beat" by the dry type additives that can be analyzed down to perfection.
The important thing to remember is, no matter what you use, you need to replace it every year. It will loose its anti rust/foaming and lubricating properties. It will still keep the water from freezing, but it wont treat the water any more.
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