31 10 000 Removing and installing complete front axle (with spring struts): Recycling
WARNING: This page is about a different car, the 2012 BMW 328i, 2011 BMW 328i, 2010 BMW 328i, and 2009 BMW 328i. However, it is still accessible from the selected car via links, so may be relevant.
Catch and dispose of hydraulic fluid in a suitable container.
Observe country-specific waste-disposal regulations