Dang. That's pretty rare actually.

I dont' imagine the mechanic took a garden hose to the engine and did a complete flush. MAKE SURE you have the heater turned ON when you service a cooling system, as then you will flush out the heater core, and burp the air out of the system when you reservice it. <img src="/forums/images/graemlins/shame.gif" alt="" /> <img src="/forums/images/graemlins/shame.gif" alt="" />

Don't wait too long for reflush of the tranny; I wouldn't entirely trust it. Not sure about the clunk thing; he might need to see if the bands need tightening. I usually steer clear of AT's myself. <img src="/forums/images/graemlins/scared.gif" alt="" />

AND LAST----DO NOT USE TAP WATER to mix your coolant. Might be how your radiator failed, in addition to your use of salt down there.