Dad has 04 S80 T6 with 213k on the clock, best car he has ever owned. Two weeks ago in the cold (-10 air temp) the transmission service urgent light went on while 300 miles from the closest dealer in MN. Transmission was fine and shifted with no issues, so drove it to the dealer where they diagnosed...

Update... New thermostat and temp sensor are in, coolant drained and filled with Volvo blue. Everything works well, temp goes to halfway rather quickly and stays there. Only had to top off once with about half an overflow tank. Nice to have heat again! Just in time for some more really cold air. Boi...

01 V70 FWD, 130k. MN Winter, been a little chilly here as of late (-15.) Recently received the P0116 coolant sensor CEL. Temp gauge hasn't been up to the halfway point since it got really cold out. Ok, new thermostat and OEM temp sensor and a drain. Previous owner did pump 18 months ago with new flu...