Hi all, so ive recently acquired a diesel series III (registered as a 2a but all the bits are III) and want to change oils and such ASAP since I don't know when its been last done etc. However, when looking into the bay the filler for the oil isn't there. Where it's meant to be there is a plate with a badly installed seal. So i'm wondering first, what the name of the filler is, and second could this have been done for a reason? Ill post images below. Cheers.