In 2006 Formula One headed to Bahrain fearful that the season opener could be overshadowed by a political row concerning Scuderia Toro Rosso's use of V10 engines.

Previously, Minardi, in view of its financial situation, had been given special dispensation to run V10s, whereas its rivals were all switching to V8s.

However, following the purchase of the Italian team by Red Bull, and its subsequent re-branding as Scuderia Toro Rosso, it was widely felt that since the financial situation had improved - and how - there was no need for the Italian team to be given preference. Several teams were of the belief that in terms of reliability and power the V10s would give Toro Rosso an advantage, and it was feared that at least one - most probably Midland F1 - would protest should that prove to be the case.

As we look forward to the start of the 2007 season, there are fears that a similar row could once again overshadow the season opener, this time in Melbourne.

A meeting to resolve the situation regarding customers cars has not helped resolve the issue, and even Bernie Ecclestone, alternatively offering threats and sweeteners, doesn't appear to be having an impact, leading to fears that rival teams will protest the Super Aguri and Toro Rosso in in March.

Courtesy of a loophole which allows team to run car 'designed' and 'manufactured' by independent third parties, the Japanese team will use a derivative of the 2006 Honda while Toro Rosso will use the 2007 Red Bull. In fact, in 2006 the Italian team used the 2005 Red Bull chassis - itself based on the 2004 Jaguar.

Although Spyker and (BMW team boss) Mario Theissen have been the most vocal regarding the issue, it is widely understood that when push comes to shove several more teams will join in should the protest come about.