I've never had a car with one so I've never done this bit. I carried out extensive research last night in preparation. There are some key points:
Access is a bitch and getting the oil out is worse.
The old oil stinks and maybe radioactive*
It needs around 125ml of new oil in it or until it comes back out the fill hole.
Plug any gaps around the teeny tiny fill plug so that it doesn't drop down into oblivion and get lost forever.
Job duration: up to three hours.
Welp, that wasn't too bad really. Great tip to ram something down the engine to close off any holes. The plug got dropped several times whilst I fudged around with my sausage fingers.
The Americans say a 3/16th allen key goes in. I could not get an allen key in there, 4mm was too small and 5mm couldn't get in, I think I have one 4.5mm but that's MIA by the looks of things. So, being British, I stuck a T30 in there and cracked it off by sticking a tube over it.
For what it was worth, I removed the intake, because you need too really and took off another breather from bank 1, it just made tight access that little bit better, plus I could see if the breather plastic hose had gone brittle, which it hasn't.
I found that it paid to clean the face with a wire brush as there was a lot of debris shifting about and I didn't want that going back in there. I messed about with sucking out stuff, I read that there was some success by attaching a WD40 type straw to the syringe but I only managed to pull out 40 odd ml and I couldn't seal the pipe joins enough. It just seemed to suck in more air than strain it through the small straw.
So I went to the shed. In there I found a 1986 BMW vacuum line.
And this had a handy shape in it...
This allowed the tube supplied in the oil pack to be forced over and secured with a tie. The bore was bigger too so sucking was not such a slow process. I cut the end at an angle as I believe this would allow the end to slip in places better than a straight cut end.
Ignore the crap on it, this was taken when I was clearing up!
I still messed around trying to get the tube somewhere near any oil, it's a bit like blindly smashing it into a brick wall. I read that going to the left has better results as something was obstructing the entry point. I wondered what this was so got the endoscope out.
Top of hole...
Bottom left of hole...
So there is a giant bit of metal in the way but also a little passage but I only had a 5mm gap between the cog and the casing.
Shooting the tube over to the left and massaging it downwards saw success. The rear of the car was jacked up a little and I removed a total of 127ml from the supercharger.
They aren't joking when they say the old fluid looks like a black coffee. The smell wasn't too bad, I can describe it as 'synthetic fish', and you can taste it in the air. It tastes exactly like it smells... which is weird.
Getting the car level, I removed the makeshift oil sucker pipework and just used what came in the kit. I got 150ml of new oil in with it dribbling out. Getting the plug back in was fiddly, verging on frustrating, and this is where the rammed in tissue comes into play... but it got there in the end. It's either loose or tight and I didn't want to hang off it because hopefully, it'll see another change. It took a shade over 2 hours from getting the stuff out and putting it away, so not too bad!
Out on the road, I could now hear the charger where as before it was pretty silent and in the background, that raised a smile!
I still have this exhaust sounding blow to find. It sounds like its coming from bank 1 when I'm in the car but out of the car, I can't hear it at all. I can't see anything obvious and it only does it under load. There is a clear blow under the car from both mid section joints, but this doesn't sound like the location, is the noise travelling up? I dunno... I might live with it until I get the whole exhaust replaced soon. They can find it then.
There are no issues with top ends being starved of oil or anything are there? I was thinking it might be a lifter or something similar?
Oh, and the drivers wiper arm base no longer hits the bonnet! So spacing it out and shifting the linkage mechanism as far up as possible has achieved something, despite play in the brass bearing.
The car shifts though, the Traction control is always on standby and getting used on these cold wet roads! Very pleased with the results so far.