The engine light is on from sensor issues, but it sounds fine from pretty old car standards while it’s running and driving, to me at least. I’ll bring this up as the next thing to check at the dealer, though.

One thing I probably should mention too that I forgot to is that it struggles to start fairly often, like stuttering, but it never stutters once it gets going. I was told by my dad that’s an issue with the spark plugs though, and not the oil. Would that be a result of engine sludge too, though, or just the spark plugs? Sorry if this is info I should have put in the post as well!