I have a 06 2500 hemi, I now have a small hole in my radiator
plan to replace on monday with anew radiator
I know I have to use the mopar coolant
But any idea on how muck I will neeed exactly when I do the change

thanks

 

You do not HAVE to have HOAT (Mopar) coolant. You can use Prestone and you will need two gallons. You also need to flush out the old first and TRY to use distilled water.

 

Dead on, I just did mine, and after replacing the hoses, thermostat, and cap, it took right at 2 gallons to refill it.

Only problem....was I couldn't seem to get the radiator drain plug at the bottom to back out/off and drain the bottom of the radiator out!

 

I know a lot of those are a ball type valve so you turn it 1/4 or 1/2 way and the holes line up and the coolant SLOWLY drains. I prefer to NOT touch those as they can become brittle and break with age and then your screwed. Instead, pop off a lower hose. I'll deal with a mess over a broken plug screw.
Not too sure about these radiator plugs??

 

Thanks dirtydog, you're right on, it felt brittle. Think most of it drained out though through the lower hose though anyway...

 

thanks guys
I am replacing the radiator in my truck, as the factory one, is coming apart at the seams
I will be using new mopar hoat coolant, might not need it, just had some, as I had hit a deer with the truck, and they had to pull the radiator off to fix, and the insurance paid for new coolant, and the shop that did the repair had an extra gallon, he gave me, so I only have to buy one gallon Now, so for that reason, I will use the hoat

so I will need 2 gallons then to fill the new radiator