Yup, some literally run the engine for 30 minutes then change it (bit anal if you ask me) but 500 to 1000 miles after a rebuild is the norm.
You are looking for 15W/40 mineral for the flat fours, the same if it's a diesel but look for one that says specifically for Turbo Diesel engines NOT one that says 'also' suitable for Turbo Diesel engines. Any brand really, you don't need to spend a fortune.
For example:
http://www.caraccessoriesandparts.co.uk ... al-5l.html" onclick="window.open(this.href);return false;
Oil and filter changes 3 - 5,000 miles thereafter with the same (at least anually)
Martin