Today my wife Accidentally filled up with petrol instead of diesel at a Wembley service, The Staff helped her to find a company that could clear out the petrol at a cost of $500 . What I was stunned about was a comment the it happens all the time , it appears that the distinction at the pump is not clear which pump is Petrol and which one is Diesel . I feel that it would be a benefit to less Mistakes at BP Fuel sites.