Blimey - that's a good deal. I use Castrol GPS 10-40W Semi synthetic and change it fairly regularly. Looks like thick Ribena ! In fact while on a recent trip to Le Mans (24 hrs bikle race - amazing but that's another story) my room mate nearly took a swig of it from a Mineral water bottle I put some in just in case I needed to top up ! Stopped him just in time - its expensive stuff
