I have an 05 Durango with the 5.7L Hemi with 207K miles. It’s been running great and have maintained it well. Having recently replaced the water pump for the 2nd time and the original alternator, I have been wondering what the life of this engine might be? How long has your original 5.7L gone?

 

I currently have 275,000 on my 04. Also just ordered $600 in parts to fix a coolant leak, but if I'm taking it off I'm replacing it with new. Going all the way in to the head gasket.
I've owned mine for 3 yrs and put 75,000 on it without any major issues until now. My current issue is air is entering the cooling system. Seems to be exiting the system into the exhaust, so holding out hope this will fix it all.
I'm planning to see if I can take it to a million miles, lol.