Thanks, Benzmac. I had an eerie feeling that I might have toasted the radiator. Unfortunately that Prestone crap isn't idiot-proof as I have proven . . . I'm still going to try to flush it out though and keep my fingers crossed. The temp gauge isn't going into the red . . . any problems from driving the car at a slightly warmer running temp?

On the transmission, what do you think about running synthetic fluid?

Thanks again,

Paul