With my Sportback 2.0 FSI I received my complimentary litre of Castrol SLX Longlife II 0W-30 oil. 1) I undertsand this is VW 503.00 spec. Am I correct that 503.00 is now covered by a new spec VW 504.00? 2) I undertsand that Castrol SLX Longlife II has been replaced by Castrol Edge. I am correct that I should be getting Castrol Edge 5W-30 now? If so, why is it 5W-30 and not 0W-30? 3) Found a doc on tyresmoke which I think Dave R wrote which says "Castrol Edge 5W-30 meets the new VW 504.00 and 507.00" but also says "Castrol Edge 5W-40 meets VW 504.00 + 507.00". 5W-40 seems to be a diesel oil not one for Petrols, so was the last statement a typo Dave? I'm confused! 4) Is it ok to mix Longlife and the Edge product that has replaced it? Cheers.