Hi there, How easy is it to change an oil filter myself in a 106 (Zest2 Diesel) I've got a new filter, sump washer and oil, is there anything special I need to do or be aware of? I'm no mechanic, but I don't want to pay for a mechanic for something that seems like a relatively straight forward job? If someone could give some advice or point me to a website or something I'd be very grateful!