Can anyone tell me what the silver canister looking thing is next to the oil filler cap on this pic? http://vw.dpgoldman.com/images/a419tdi.jpg Ive a B6 1.8 Turbo with quite a bad coolant leak coming from just below the silver canister thing. Does anyoe know what is under there on the afore mentioned engine? Obviousy the pic above isnt of my car, its just there to find out what the silver thing is. Sorry for my noobness and cheers for the help. Pete.