Spanish Grand Prix in 90 seconds
Ross Brawn has insisted his Brawn team does not operate a "favouritism" policy following Rubens Barrichello's outburst at the weekend's Spanish Grand Prix.
Barrichello threatened to "hang up his helmet" if he found championship leader Jenson Button was being favoured.
Brazilian Barrichello lost Sunday's race in Barcelona to Button after boss Brawn changed Button's strategy.
"We don't have a one and a two driver," Brawn told BBC Radio 5 Live. "They're both on equal terms and conditions."
Team orders are a sensitive subject for the veteran Brazilian, who left Ferrari in 2005 a year before the end of his contract because he was fed up with not being allowed to race team-mate Michael Schumacher.
Brawn was Ferrari's technical director at the time.
But the Brawn boss was at pains to explain that Barrichello's outburst had been "overblown" by the media.
"Once he got back and we talked things through he was fine," said Brawn. "Rubens is a great team player. Everyone is working so well together and Rubens and Jenson recognise that.
"The fact we have such a great atmosphere drives us on and we don't want to lose that.
"We've been completely honest with the drivers. They know the situation and their engineers know that - there's no favouritism.
"Our plan is to give both drivers both equal opportunity unless there is a mathematical chance one can't do it," added Brawn, referring to the possibility of either Barrichello or Button winning the F1 title.
"If one driver can do it and one can't then we would have to focus on that driver."
After five races Button has 41 points in the drivers' world championship - 14 more than second-placed Barrichello.
Barrichello blames race tactics
The Brazilian had expected to win the race after making a brilliant start from third on the grid and leading into the first corner.
Brawn planned for both cars to do three pit stops but Button's strategy was changed at his first stop because the team were worried he would otherwise get held up by the Williams of Nico Rosberg - who Barrichello only just emerged ahead of after his first stop.
Button then proceeded to set an impressive series of times, despite his heavy fuel load early in his second stint.
However, Barrichello remained on target to win until his own second stop - he then had problems with his third set of tyres and lost sufficient time for Button to get ahead.