I was in a rush so I picked up some Sainsburys 5-40 VW spec fully synthetic 1L, topped it up on level ground & it took 1L! Not too bad for 8 months driving I suppose, mate of mine says VW allows 1L for every 1K!! I said mate it's not a two stroke!On a side note I got to test the PCV too while the hood was up, & that was fine.