Footballer Cristiano Ronaldo, Castrol's global ambassador, is set to star in the oil giant's first ad funded film documentary.

The hour-long film, shot in Madrid, is broadcast in the UK on Sky Sports in September to coincide with the launch of new brand Castrol Edge. The documentary gives fans an exclusive insight into what makes Ronaldo one of the best footballers in the world, and also includes interviews with Fabio Capello and Arsène Wenger.