At 04:34 AM 5/24/2002 -0400, you wrote: >Well, I finally had my radiator on my '59 Imperial rodded out yesterday, and >a new thermostat installed. Bill, did the shop tell you that indeed the radiator was clogged? When I had similar problems a few years back with my 68, the shop told me that they put it in the flow bench, and it was fine, so they did not even bother to rod it.. When I reinstalled the radiator, the overheating was magically gone (which puzzled me at the time), but only temporarily. The explanation was that my problem was rust in the coolant from the block all along. When I removed and reinstalled the radiator, I also replaced most of the coolant. Eventually, the coolant got full of mad again, and the problem returned. There is some chance that you have the same issue. I recall your car had a coolant filter there somewhere. May be the previous owner had a reason to install it, in a sort of desperate effort to keep the coolant clean. D^2