Thatcham Accredited - the only one in the WORLDThe Diesel Key replaces the existing filler cap and once fitted, prevents you from accidently putting the wrong fuel into a diesel filler neck. This device is a physical barrier that only the diesel pump will fit into. The Diesel Key is the only misfuelling device on the market today that offers protection from fuel theft. Misfuelling incidents occur with petrol being pumped into diesel-powered cars, as the narrow petrol nozzle can easily fit into a diesel vehicle. Over half of the vehicles in Europe are now diesel powered, with this figure expected to increase further adding to the potential for misfuelling. You may think it could never happen to you but misfuelling is more common than many people think. It only takes a temporary lapse in concentration and the damage is done.www.dieselkeyeurope.com