check your oil. is it only the temperature gauge that's rising? maybe considering to buy new temperature sensor. or go to garage and read motormanagement with diagnostic tool.
Yes there is a coolant sensor in the Renault megane.
Yes. The antifreeze/coolant also raises the boiling point and has lubricant and anti corrosive properties.
Antifreeze/Coolant
Water is used as coolant in car radiators because it has high specific heat capacity of 4200 Joules. It has the highest specific heat capacity than any other substance. That is why it is used as coolant in car radiators
Any coolant leak can cause an overheat.Any coolant leak can cause an overheat.
There could be many reasons. Not enough coolant or bad flow, faulty thermostat, low oil. If the coolant freezes then it will overheat. If your car continues to overheat then you should have the coolant flushed and thermostat replaced.
If there's no leak, an overheat is caused by a problem with coolant level, coolant circulation, or heat transfer. Fill the coolant level. If the problem recurs within a month, it was something other than low level. Circulation problems are caused by clogged radiators, bad water pumps, non-functioning thermostats.
There many other reasons for a vehicle to overheat besides thermostat and radiator cap. one example is retarded ignition timing.
The TTR125 uses an air cooled engine, there are no radiators to put coolant in.
drive it without coolant
YesYes
Babies can overheat quickly in this weather. If you overheat the oil, it will burn. Be sure that there's enough coolant in the radiator so that it doesn't overheat.