gsf are selling total quartz 5-40 full synthetic for around twenty quid for 5 litres at the moment which compared to some prices seems rather a good deal
http://www.gsfcarparts.com/ no doubt some "expert" will be wheeled out shortly to rubbish it but the API spec seems more than adequate to me
http://www.total.co.in/lub/lubroot.n...256EF3004DB954&