Already time for a cooling system rebuild.

After work tonight, I decided to start with a Prestone 10-minute flush. Which takes more than 10 minutes, of course. Opening the petcock for the radiator only resulted in getting my fingers a little wet. About 15 PSI with the pressure tester did the trick. After that, I followed the instructions on the bottle. While waiting for the engine to cool down between sessions, I tried to replace the alternator/AC and power steering belts with the new ones I bought last week. They were all too big, the power steering belt comically so. At least the old belts haven't broken yet! :D Got them back on, finished the last drain, poured in some fresh 50/50 mix and went for a test drive around the block. Everything seemed okay as far as I know (as my luck would have it, the only gauge that doesn't work is the temperature gauge), so I eased it home. By this time it was 10 at night and only 82 degrees outside. Only interstate stretch was on I-440, which is limited to 55 so I did 53 according to my phone app (speedo reads over 20% fast, so I'm using an app for now). Rest of the drive home was in 40 and 45 zones.

Obviously, I need to get the temperature gauge working. And take the old belts with me when I return the new belts and see if they can just match them. Then another run down the interstate in the daytime to see if it overheats again.