2010 G37 overheating purchase the car from Honda dealership..
10 miles from dealership car went into limp mode overheated left me on the side of the road..
Honda took the car back to their mechanics they change the radiator and thermostat...
Car ran fine for 2 days began to overheat again I brought it into Infinity dealership they said they did not properly flush fill and burp your system.
I got the car back ran fine for a day overheating again...
Brought it back to Infinity said the thermostat was bad..
So I replaced the thermostat again..
They also told me they did a pressure test everything was good...
Did a little research I did a block test to check for any gases thinking it was my head gasket test came back good..
So back to Infinity flushed out the system said they had debris gold flakes maybe original owners used a stop leak on radiator started to overheat again..
So my next option pull the motor replace tired of messing with it ..
In all reality I think Honda sold me a car that had overheating issues haven't even made the first payment on the car and it's been looked at five times four by Infinity once by Honda....