Correct mix formula - 1/2 water and 1/2 coolant??

[boston_blacky]

Greetings;
So I finally found the radiator drain plug on my 2005 Dodge RAM 2500 Diesel. It's-you guessed it-made of plastic! My only question now is - before I drain and flush it this weekend - what's the correct coolant replacement mix. I believe it's half distilled water plus half anti- freeze. Is that right? :@

[donn0128]

Yes, but, before you do that, how are you going to dispose of the toxic waste? Used coolant is toxic waste afterall. And do you have Cummins approved coolant and not some cheap junk found at the local auto parts store? Cummins is very specific about their coolant so be careful not to use the wrong stuff.

[JIMNLIN]

Thats what I use in all of my trucks.