I doubt it, it just was tired after 40 years and around a hundred million operations. The oil mist just protected all the metal from corroding, I think the contacts just wore out electrically from use, and then when the spur got too big the arcing finished it off. This machine used to run 24/7 in it's previous use, and I am still clearing out old product from it every time I work in some of the more confined spaces. There are parts I have never opened even to look, they are still working as well as when new. I am now getting to the point where the next shutdown will likely result in me replacing a row of assorted relays with a single long DIN rail and a load of 11 pin sockets and new 11 pin relays, as there are now only about half of the original ones left in it. only issue is the one relay is a special contact version, so I will have to build it up out of a few cascaded relay units, along with having to get some 20A rated relays for the one section, as there it does draw 15A for heaters. Can't use a SSR as it needs to have safety monitoring contacts, and it runs at 400VAC between phases. the original relays simply run 3 sets of contacts ( out of 4) in parallel to get the contact current down, and they are wearing now, rated 20A AC1 and 16A AC3