A friend of wife is a social worker at a govt. dept. She was out on calls in a govt. car and filled it up at a Coles Shell who had the govt. contract at the time. Govt. fuel card was rejected as it only allowed purchase of diesel. Is that a diesel or petrol car says the console operator. Huh, says Mary, how do I tell? Well the label on the filler cap "Diesel Fuel Only" should have been an indicator. She had never before had a diesel car. You took the car to Coles and filled it up with petrol. Car got pushed off to the side away from the pumps and Mary 'phoned her boss. Boss 'phoned fleet controller who 'phoned Mary and told her to buy 5 litres of cheap engine oil and pour it in the tank. Nothing else done and car continued in service. Unwelcome comments about "*(+%# social workers, dumb as dog ****".

