I'm not "still going on about it", merely answering a polite question.
I have seen the video and am not disputing it, however, everything checks out from my end too. I'll try disabling some of your options and see if anything changes.
I'm not complaining by any means, just thought at the time that it may have been an "easter egg" of some sort.
_edit_ I've disabled the "enhanced damage effects" mod, and now I don't get the explosion, or the leaking air. But a diesel leak still shows, eventually.