Just having a bit of a chuckle. 'My cars running hot' , 'Is it over 95 Sir' , 'Actually its on M mate' , 'What Temperature is that then' , ' Well its lower than N '.
Why not fit a gauge so you can talk Temperature which is what you are trying to control. This is a 25 year old car you need to be in control of certain things & Temperature is one of them. Far cheaper than a new Head Gasket to fit a decent Gauge.