E90 coolant change [the recommended way]

[astroboy]

I think this is recommended every 60k km. My Avanza is performed at every 40k km.[video=youtube;KDBGYRlMPOQ]http://www.youtube.com/watch?v=KDBGYRlMPOQ[/video]I'm totally lost on the section when a pressure system in plugged into the expansion tank. Does our authorised SC perform the same thing?

 

[BlackE90]

I'm totally lost on the section when a pressure system in plugged into the expansion tank. Does our authorised SC perform the same thing?

Astro, I can confirm that my favourite SC (you know) does perform the same procedures as shown in the video on my car when was there to have my radiator changed.

 

[astroboy]

It actually creates a vacuum inside the cooling system to remove all expired coolant including residue before releasing the fresh coolant in. Brilliant!