With some of B&q's finest accessories,lol. I basically sourced a small piece of plastic (that would fit under the dipstick handle(where the top of the tube goes into)) and then got some rubber trim (like the kind that goes round the heater box in the engine bay) and trimmed to suit. I then pretty much wedged it all in place as it was a damn tight fit. It made pulling the dipstick in and out tough, but it worked,lol!