Mechanic told me that the it has got a small motor, I have yet to drive the car in hot summers with full AC so thats why I was concerned....Islo to sahiwal is like 8 hrs of drive, so dont want to take risks....plus got the ac and heater service and radiator cleaned as well, during the process came to know that the thermostat valve is missing, should i get it installed? the mechanic said that it good not to have it during summers, what do you suggest? I think its better to get it installed...