Okay guys, this one has me stumped. I'm getting near the 150,000 mile antifreeze change interval on my 2013 200 and am looking at replacing the thermostat when I do the flush and fill. I have two options and both are strange temp choices for me. One says 170 degree t-stat and the other option is 203 degree temp stat. SAY WHAT? When did these strange temp stats come into play and how the heck do I know which one to get? I'm guessing I'll get the 170 just to get the cooler running engine. I'm in FL, so not real concerned about a HOT heater. I'd never use it at all if not for the wife. Will the OEM t-stat be stamped or does anyone know what usually is the standard? Or does the 2.4 have two thermostats, one of each temp? I know they're probably stupid questions, but I'm just the guy to ask them.