RBR will be running the Renault 12 token upgraded engine in Brazil, having passed on using it in both Austin and Mexico. This power unit upgrade has been the result of a joint effort between Renault and the Red Bull appointed consultant Mario Illien. TJ13 has learned that the reason Red Bull have refused to run this PU at the past two races is because no agreement on joint intellectual property had been finalised. The deal is now done. Mario Illien, the former Ilmor engine guru, has been working in the new Milton Keynes building 9 for over a year and assisting Renault in solving fundamental design flaws in their F1 power unit. Much of this revolves around the engine block. The result is that Renault have agreed to manufacture and supply Red Bull Racing for the near future, the co-designed 12 token upgraded ICE, whilst Red Bull will supply their own ERS components for the F1 power unit. http://thejudge13.com/2015/11/05/exclusive-red-bull-secure-an-engine-for-2016/