Finally got around to changing the oil. Would like to meet the designer who thought it was a good idea to place the anti-roll bar just below the replaceable filter element cartridge!! For those that are planning this, you need a 65mm 14 flute oil filter removal tool, however trying to get a socket or spanner on this is pretty much impossible with the anti-roll bar in place, so you need to remove the two bolts on the drivers side holding the anti-roll bar down which allows enough movement to get at the filter cartridge. Its a bit of a PIA!!