DIY: How to add & bleed a Coolant for BMW E46/E39 3 Series 2000-2006

[ErikMach1]

you used the wrong anti freeze for your BMW

[hanguyen0987]

The bleeding screw, close to radiator cap; not the radiator cap.

Thanks for watching my video.

[drtwofake1]

where is the screw that you open after you have driven the car for a couple of miles?

[hanguyen0987]

Yes, this is the way i have done for 4 years to bleed the air pockets out of the cooling system.

Thank you for your comment.

Richard

[askfskpsk]

Is this how you drive the air packets out of your cooling system on your e46?

[hanguyen0987]

The small leakage is very hard to detect it. The most of problems points out to be the expansion tank. BMW designed the expansion tank lasting for 70 to 100K miles. Let the car sit for whole night and open the radiator cap and listen to the hiss coming form the cap. If no hiss, may be expansion tank because when it cracks, tiny crack, it releases the pressure over night. That is all I can think about it. The leakage can come from hoses, seal, exhaust heat, cylinder head etc.Do pressure test last

[pdpstrongsad]

Strange question for you...

My coolant level has dropped with no signs of visible leakage in the engine bay or on the ground. Any ideas?

[redgts00]

@pdpstrongsad Check tailpipe... If nothing there, you have a leakage in the heater core.

[TheRich159357]

This is simple and concise video help me keep the coolant level in normal level all the time. My car has a small leak and I have to refill every 3,000 miles.

Thanks for sharing video