I have a 2016 Dart. My daughter drove it 10 miles hot. I believe the head gasket is blown but do not know? I do have water (coolant) on the dipstick. How do I know for sure? It will crank but after 20 minutes or so runs rough as all get out. The overflow tank hose was cracked and if she would have pulled over and called me the fix was a couple of bucks, now maybe a head gasket or new motor? ANY suggestions or advice is appreciated. Is Blue Devil even a good option?

 

I believe you can rent a combustion gas test kit from an auto parts store that will tell you for sure.