The last few times I've been out in the car I've noticed a droning noise while driving along. My initial thought was that it was a split turbo pipe or that the exhaust was blowing somewhere.
I've checked the VNT hoses (replaced with silicon ones a few years ago) and the upper and lower turbo hoses but can't find anything. I've also checked along the exhaust but can't spot anything obvious there either.
While under the car I saw leaking oil around the gearbox area (this is where I'm likely to get some terminology wrong so bear with me).
The oil appeared to be coming from where the black thing circled in the piccys below (driveshaft boot?) meets what I think is the gearbox. The yellow arrow indicates where they meet and where I think it was coming from;
I pulled the black thing in the direction of the red arrow (away from what I think is the gearbox). It slid away easily revealing what I think is the bare driveshaft and more oil trickled out! I quickly pushed it back into place to stop more from coming out.
Am I right in thinking these things are gearbox, driveshaft and driveshaft-boot?
Should the boot slide away so easily? If so should oil be able to readily escape from there?
Would a gearbox low on oil cause a continuous droning noise when driving along (most noticeable at certain speeds)?
The car had a new clutch a couple of months back, could this be related in some way?