I assume there’s some sludge in most oil pans, but discovered what seems like a lot of sludge while probing around through the drain. Goo had an unfortunate amount of grey shine as well. Aside from needing full tune-up on the engine, do I just need to pull the oil pan and clean it out? Should I buy new hardware when I do that? PO had the filter installed wrong (perch was below the spring), and I replaced it that way in April with oil that probably was too thin. Realized my errors from old posts and was changing oil last night night (ordering the IR spinoff today, as I’m done with that nonsense) when I discovered the sludge. BTW, the old filter from PO looked older than my teenagers but probably wasn’t doing much given fitting. Thoughts appreciated. Reprimand already self-administered, but they’re OK, too, if entertaining.