Consult your owner's manual.
Use exactly the weight that Mini recommends. http://www.ehow.com/list_7739452_list-mini-cooper-approved-oil.html
Describe in detail how to change the oil in a 2005 mini cooper.
If it is a CVT transmission then yes you can use cvt gearbox oil in a mini cooper.
MINI specs synthetic oil for all models assuming you are talking about the moder MINI and not the older Classic Mini. Using a normal dino oil will void the warranty and not offer the same level of protection a synthetic oil provides.
ye
A 2007 Mini Cooper S uses a Purolator L15465 oil filter. It is designed to trap small particles in the oil before it can damage the engine.
every 5000ks
very carfully
The manufacturer recommends that you use 10W-30 motor oil in your 2006 Mini Cooper. Use in extreme climates may call for a heavier oil, like 10 W40.
Change the oil filter every time you change the oil.
5Ltrs incl filter.
5l or 4 1/2q