Quote:
Originally Posted by DocComix
....The mechanic (called me 6 days after the oil change) said that they are looking for a special piece of equipment, worth approximately 1500 USD, to refill the fluid. His words were "it has to be done under pressure...".....
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From what I've pieced together.....
The tanks are not very accessible. The small one in is the right front wheel well and the large one is under the left front seat. So I'm guessing they don't have drain plugs. The plastic tubes that run from the filler connections to the tanks are corrugated, fairly small diameter and the one leading to the small tank has at least one 90 degree bend in it. Simply getting out any old DEF left in the tanks, probably requires a suction pump (or a pressure pump) with a fairly small diameter flexible hose. I suspect this is why BMW dealers call the DEF maintenance procedure done on a 35d a "flush & fill".
Or maybe that term refers to the procedure on the 35d owner
Funf Dreisig