Can you be any less specific please? ;)
Yeah, Some details could be nice :)
Still, Rule of thumb says you shouldn't need to. Just Don't rev the engine right away. Give it a few moments for the oil to Circulate.
So you think of a car, but what if it was the oiltank for the heating of his house, or on a big machine? ;)Because last I time checked I had no oil tank on my car...Do have on the boat motor and jetski though being two stroke...
I've seen some vague descriptions of parts here before; Just working with what I was Given :P
I often end up bleeding when completing a project. "Nothing is ever really finished until it has drawn blood". So I would say yes, but only enough to leave some forensic evidence behind. Major bloodletting is usually reserved for the truly stupid mistakes.