New Red Bull signing Daniel Ricciardo will drive a 2011 Red Bull racer later this week when he takes part in a Pirelli test.
The Aussie will be action for one of the two days in Spain as Red Bull use an old car to help Pirelli develop their 2014 tyres.
"Pirelli approached all of the teams to see if they would be prepared to supply a 2011 car to conduct some 2014 tyre testing. So we've made a car available to Pirelli," team boss Christian Horner told Reuters.
"Sebastien Buemi, our test driver, will be driving on one day and Daniel Ricciardo will probably drive on the other because it's an opportunity just for him to familiarise himself more with the team."
Red Bull's test comes just months after Mercedes were in hot water for taking part in their own private Pirelli test. Merc, though, used this year's W04 instead of an old car.
Meanwhile, Pirelli motorsport director Paul Hembery is adamant Red Bull will not obtain an advantage from the test.
"They won't know what they are testing - and they won't have a clue what tyres they are running," he said.