In these big oil companies, people often move to the lubricants divisions before retirement, looking for something steady and less demanding. Therefore, getting someone to talk is pretty unlikely, with realistic chances being slim to none. The world of lubrication specialists and experts is quite small, and everyone tends to know everyone else. Most certainly, these people don't tend to come here, and when they do, they don't stay very long. There are a few exceptions, but those are rare, and they've already shared as much as they wanted to. Just ask
@Foxtrot08.