Supercharger Oil Change

I would like to change the supercharger oil in my wifes 00 C230. The only info I can find so far is that it is "filled for life" and only has a fill/level port. I can't find a drain on it anywhere so I'm assuming I will have to suck out the old oil.

I am looking for someone who can help me with any information they have on this process because I would like to do it. Do any of you techs have any experience with this? My service advisor qouted me $55.00 for 4 oz. of the oil. Not a cheap oil change, but if done every 50k miles, and gives me years of trouble free service, and of course gives me that nice warm fuzzy feeling, than it's worth it.


Thanks in advance all,

Dale