I had expected this to be some ordinary cap but it’s a series of cylinders with a small hole. Is there a delicate mechanism inside or can it be immersed into Bilt Hamber Deox C like all my other rusty bits?
Possibly the thing being discussed in the latter pages of this thread? https://www.clubgti.com/forums/inde...many-versions-faq-added-p2-updated-p4.197527/
Thank you yes that’s it. I won’t completely submerge it as its clearly a mechanism of some sort. I’ll just put it upside down up to a certain level of Deox c