The FIA has stepped up its clampdown on Formula 1 teams potentially trying to get a power boost by using oil as fuel, with a fresh directive to teams issued ahead of the Azerbaijan Grand Prix. While what has been a season-long focus on oil burn was initially prompted by Red Bull suspecting rivals had found a way around the regulations, it is understood the latest move has come unprompted from the FIA because it wants to ensure all teams are operating within the regulations. With the issue first coming to light on the eve of the campaign, the FIA upped its monitoring of oil usage and its chemical composition to ensure that no wrongdoing was taking place. However, with grounds to suspect...
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