Current tensions between Red Bull and Renault have prompted speculation that the Milton Keynes outfit may be thinking about designing its own engine.

It isn't the first time such a prospect has been considered, as the possibility was briefly mentioned last summer, although at the time Christian Horner all but ruled it out, stressing that working with a strong partner was preferable.

But as both parties mutually lashed out at each other in the aftermath of a disastrous Australian Grand Prix weekend, the probability may have been once again put on the table by Red Bull management.

It is also rumored that Red Bull will have a dyno up and running at its factory by next September suitable for testing the engine and gearbox entity, while a new cylinder head designed by engine guru Mario Illien is also on the verge of being tested. Illien's engineering company has been working as a consultant for Renault to help the manufacturer improve its performance.

Difficult times often lead to crucial decisions, and there's no doubt the coming months will indeed have a strong bearing on the F1 future of both Red Bull and Renault.

Click here for the full gallery from the Australian Grand Prix

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Phillip van Osten

Motor racing was a backdrop from the outset in Phillip van Osten's life. Born in Southern California, Phillip grew up with the sights and sounds of fast cars thanks to his father, Dick van Osten, an editor and writer for Auto Speed and Sport and Motor Trend. Phillip's passion for racing grew even more when his family moved to Europe and he became acquainted with the extraordinary world of Grand Prix racing. He was an early contributor to the monthly French F1i Magazine, often providing a historic or business perspective on Formula 1's affairs. In 2012, he co-authored along with fellow journalist Pierre Van Vliet the English-language adaptation of a limited edition book devoted to the great Belgian driver Jacky Ickx. He also authored "The American Legacy in Formula 1", a book which recounts the trials and tribulations of American drivers in Grand Prix racing. Phillip is also a commentator for Belgian broadcaster Be.TV for the US Indycar series.

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