ok I am having a problem with my 1999 ram 1500 v6 automatic I just replaced my radiator because it had a bad leak in it and it over heated after I replaced it I have had a problem of right after I put coolant in it it starts pumping out white smoke out of the exhaust and I check the radiator and im short about a gallon of coolant and its riding slightly rough I checked the oil and its not milky at all please help

 

Blown head gaskets. Engines gotta have the top end re-done. No way around it.

 

even though no milky oil

 

Yes. The break in the gasket is between a coolant passage and combustion chamber. That or you've a very severely broken engine with cracked cast iron somewhere. Chances are, though, that it's just the gasket.