Renault: Fuel development is putting Red Bull behind

Renault and McLaren use BP/Castrol fuel and lubricants, but Red Bull has a deal with Exxon/Mobil.That means when developing the engine Renault conducts dyno sessions specifically for Red Bull, using Exxon/Mobil products, but that involves less running time than is conducted with BP/Castrol.Recent steps by BP/Castrol, which introduced an upgrade at the Spanish GP, have benefited ... Keep reading