How can I get the air out of Cooling System of 95 Max. My car generate heat in summer but not in winter.The gauge goes up when the car is standing but goes down when it is running. I think there is air in the system but can not locate the bleeding screw.

 

you're not serious are you? There's no 'bleed screw' on a radiator. Make sure you have a good 50/50 mix of coolant and water. Water cools a motor not the coolant. At idle in hot summer conditions engines generally will increase in temp, when you start moving and get the water flowing again it comes back down, this is normal. Redline makes water wetter that helps cooling, its 8 bucks for a bottle.

 

The 4th gen Maxima has no bleeding screw for the cooling system. If you did a flush and refill the procedure to bleed is to run the car with the radiator cap off and heater on full blast until the car warms up. If your car is overheating and you haven't opened the system lately you are either extremely low on fluid or yor water pump is broken.