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just did a 2013 Chrysler 200 3.6 - did not even bother draining the coolant lost maybe 2 cups of coolant and job took me less than 30 mins start to finish unless you need/want new coolant don't bother
when i did my thermostat i did not drain coolant but i did it at the same time i did my oil filter housing/cooler and only lost about the same he did and just topped up and bleed the system
Don't know the 300 specifically, but this engine in both a Journey and a Wrangler will run at 185F in lower Temps (below 70 outside). Living in Phoenix, on a 115F day with the A/C at max and in stop and go traffic up at 8% grade, both would hit 215 or so. Never overheated, but the fan was at full blast. Once you take the load off it will cool to about 200.
@@michaelwise6970 yes, just wasn't sure how great the airflow to the radiator was on the 300. I would think with the large frontal area it might actually run a bit cooler since the radiator can work a little better. Not sure though.
I tried to do this and failed. Most likely, a plug on the hose is needed as when I tried to clamp it like I have on other vehicles, the hose was stiffer/dryer/less maliable than I am used to and it cracked. I also live in the desert, which likely played a role.