Five servos in Perth will sell unleaded fuel at least 20c/L cheaper than the average on Wednesday. Vibe at Wanneroo, Bullsbrook and the Oakford truckstop, along with Costco’s two outlets, in Casuarina and Perth Airport, will all have the bowser price set below $1.75. At the other end of the scale, BP service stations in Mindarie, Mullaloo, Henley Brook, Greenwood and Beldon will sell the city’s most expensive unleaded at $2.04. The average price of diesel in Perth will rise 1c to $2.27. At the height of the conflict and pressure on worldwide oil supply, unleaded petrol in Perth topped $2.50/L.