Originally Posted by
TexasSRT
The only place where coolant and trans fluid would share a location is in the radiator, it doesn't matter how new it is, if there was no coolant in the water and the water expanded when it froze I am sure it cracked the radiator and that is why you are getting mixed coolant/Trans Fluid, so replace the radiator and hope nothing else bad happened.
You should ALWAYS have the recommended coolant / antifreeze in your system as it is needed to protect the aluminum engine, radiator etc from corrosion.
Also you'll need to completely flush the transmission fluid (that entails more than just dropping the pan - you need to find someone with a transmission flush machine) or you will next be looking at replacing your transmission . . .
