[Dave at Pelican Parts]

What is an "i10 s"? Do you mean a 2010 MINI Cooper S? In that case, it's the same as for all of the other 2nd-generation MINI Coopers. (2007-2013 model years, roughly.)

You drain the oil, replace the filter, and refill the oil. Access to the filter can be tricky; most people move the coolant overflow bottle out of the way for better access. The bottom of the oil filter housing has a hex head on it, and you use a large socket (I forget the size, something like 30mm?) to loosen it so you can remove the cartridge inside and replace it.

--DD