In this tutorial I will show you how to change the engine oil including the oil filter on a Ford Focus MK4. Castrol MAGNATEC 0W-20 D Motoröl, 5L 53,20 € View on Amazon MANN-FILTER, HU 5001 z Ölfilter | Für PKW, Hohe Filtrationsleistung, Optimaler Motorschutz, Hochwertige Dichtung, Echte OE-Technologie 11,27 € View on Amazon