Hej I am coming off the long service interval scheduling and want to move to regular oil and filter changes. My local garage are insisting that I can use a fully synthetic oil ( eg Castrol ) instead of the recommended VW/Audi Longservice "arm and a leg" stuff which they recommend. Is this correct? Am sure this topic is up here somwehere, can someone please confirm or deny and send me a link to where I can obtain the info. Thanks in advance, Cheers A 5 Litres of the VW/Audi longlife is nearly 100 quid up here!....shocking!