Let's get a thread started with the most common questions asked, and with links to the threads that have the answers, think of it as a quick reference guide
For example, What oil for my car? Guide for choosing oils
Add your threads here and they will be added to the original post.
How do I bleed my cooling system? http://www.bmwforums.info/3-series-g...-your-bmw.html
Does my car have a Clutch Delay Valve, and how do I change it? http://www.bmwforums.info/bmw-3-seri...lay-valve.html