Bleeding cooling system?

Bleeding the cooling system of your 2010 Nissan Altima is an important step after performing maintenance that involves draining the coolant, replacing components, or if air has entered the system. Air pockets in the cooling system can lead to overheating and inefficient cooling. Here's a general guide on how to bleed the cooling system:

Note: Be sure to work on the cooling system when the engine is cool to avoid burns from hot coolant.

Materials Needed:

Coolant
Distilled water (if needed)
Funnel
Socket set and wrenches
Container to catch coolant
Steps:

Preparation:

Park the vehicle on a level surface and engage the parking brake.
Ensure that the engine is cool to the touch.
Locate Bleeder Valve:

The cooling system bleeder valve is usually located near the thermostat housing or the highest point of the cooling system. Consult your vehicle's service manual for the exact location.
Fill the Reservoir:

Open the coolant reservoir cap and check the coolant level. If it's low, add a 50/50 mixture of coolant and distilled water to the specified level.
Open Radiator Cap:

Locate the radiator cap and open it. If the engine is still warm, wait until it cools down before opening the cap.
Open Bleeder Valve:

Open the bleeder valve slightly. This will allow any trapped air to escape as you fill the cooling system.
Fill the Radiator:

Use a funnel to slowly pour coolant into the radiator until it's full. As you add coolant, you might notice air bubbles escaping through the bleeder valve.
Monitor Bleeder Valve:

Continue adding coolant until a steady stream of coolant flows out of the bleeder valve without any air bubbles. This indicates that air has been purged from the system.
Close Bleeder Valve:

Close the bleeder valve tightly.
Close Radiator Cap:

Close the radiator cap securely.
Run the Engine:

Start the engine and let it run at idle for a few minutes. Keep an eye on the temperature gauge to ensure it stays within the normal range.
Check Coolant Level:
After the engine has warmed up, turn it off and let it cool down.
Check the coolant level in the reservoir and the radiator. Add more coolant mixture if needed.
Final Check:
Take a short test drive and closely monitor the temperature gauge to make sure it remains stable.