Castrol Magnatec is the oil many Honda dealers use for a service, they buy in bulk, If you do not wish to spend the money for Magnatec, then it is worth visiting Halfords or Tesco, Tesco sell synthetic oils at £20 for 4 litres, reading the specifications printed on the product, the Tesco oils tick the boxes, we are lubricating a Jazz engine , not a turbo-charged 911 Porsche with sky-high oil temperatures