Gumtree scammers 'poured used engine oil into the coolant system of a second-hand BMW before a test drive' Daily Mail Scammers allegedly poured used engine oil into a car's coolant system before a test drive, then asked the dealer for a reduced price when it sounded faulty. John Woodcock advertised a BMW E39 for sale at £1,750 on Gumtree when three men claiming to be ... |