It takes a lot more than a forced landing practise to cool the engine to a point where a go around is conducted with a critically cool engine.
Go try it with an engine monitor. If your oil temp is below the minimum recommended ...... Check your oil temp instrument/ sender
Think touch n goes..... No different. Missed approach? Yep no different.
Another OWT BUSTED!!!!
PS : I once believed this rubbish I was taught too.