Williams has announced a new multi-year partnership with Brazilian multi-national energy company Petrobras. Petrobras was a partner of the team between 1998 and 2009. Petrobras and Williams will work together to develop a new specialist motorsport fuel for use by the team starting in the 2015 season. "Petrobras and Williams have had a successful partnership before and we are both looking forward to reuniting for 2014," said team principal Sir Frank Williams. "Technologically they are very strong and that will be important for the team […]