Cool thermostat and radiator flush on Cadillac Fleetwood Brougham 1966
Channel: Fatal Garage
Date: 2021-06-20

Today we're replacing the (unknown) thermostat with a new cooler 160 degree farenheit (71 degree celcius) one. Recently some leaks in the cooling system has been identified and fixed. We'll also take the opportunity to flush out the radiotor, since we have basically no anti-freeze left in the system at this point anyway before putting new anti-freeze into the system.


The only tool needed for this job is a 1/2 inch wrench and a screwdriver to loosen the hose clamp for the lower radiator hose, plus ofcourse the razor-blade tool to scrape off the old gasket as well as scotch brite pad. I also bought both "radiator rinse" chemicals that should help knock loose old rust and particles in the system, then new anti-freeze as well as water pump lubrication. Parts installed where the new thermostat plus a new gasket for the thermostat housing as the old one was really crusty.