Just a few comments...
Oil - make sure that it meets the Ford spec for the Focus. And I'd stick with 5W-30, Castrol Edge or fully synthetic if you can afford it.
Filter - I'd probably use a Ford filter, unless you can get a good quality US filter such as Purolator. (NOT Fram!)
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MB Mondeo TDCi wagon, sea grey, on MAK Invidia 16" wheels.
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