Iv'e had my 1997 E200 petrol saloon for a year now & thought I should check the transmition level, I noted some threads relating to manufacturing your own dip stick but asked my local indie in Shrewsbury.He firstly said that he would need to connect up his laptop sized gadget to see what type of dip stick was required but then informed me that all we needed to do was run the car up to temp and when the transmition oil temp reached normal we could undo the drain plug & the oil should drip out showing correct level. Mine ran out so he assumed !! it was overfull & that was better than under filled. Who is the real dipstick here, me for trusting him or is he correct ?