The oil on a BMW Z4 is changed by putting a oil drain pan under the engine, placing the vehicle on jack stands, and removing the oil drain plug. The oil is then allowed to drain, the plug re-installed, and the engine filled with oil.
When do you need to change a timing chain on a z4 2.2
5w-30
Go to links below and download instruction. http://www.allergybegone.com/bmw-z4-cabin-air-filter.html
5w-30
It's in your Owner's Manual.
The 2012 BMW Z4 has 16 valves.
The 2005 BMW Z4 has 24 valves.
The 2009 BMW Z4 has 24 valves.
The 2008 BMW Z4 has 24 valves.
The 2011 BMW Z4 has 24 valves.
The 2010 BMW Z4 has 24 valves.
The 2014 BMW Z4 has 16 valves.